Nursing Elites

1. Fred Hampton desired to see lasting social change for African American people through nonviolent means and community recognition. Which of the following is the best way to start this sentence?

• A. NO CHANGE
• B. Unfortunately,
• C. Finally,
• D. As a result,

Correct answer: D

Rationale: 'As a result' correctly introduces the cause-and-effect relationship in the sentence. In this context, 'As a result' signifies that Fred Hampton's desire for lasting social change through nonviolent means and community recognition led to a specific outcome or consequence. The other choices, 'Unfortunately,' 'Finally,' and 'NO CHANGE,' do not fit the context as they do not convey the cause-and-effect relationship intended in the sentence.

2. Which term is used interchangeably with negative variation?

• A. Non-correlation
• B. Direct correlation
• C. Inverse correlation
• D. Positive correlation

Correct answer: C

Rationale: The correct answer is C: Inverse correlation. Negative variation is synonymous with inverse correlation, indicating that as one variable increases, the other decreases. This relationship is the opposite of positive correlation, where both variables increase or decrease together. Non-correlation and direct correlation do not convey the concept of negative variation and are not interchangeable terms in this context. Non-correlation refers to variables that are not related or associated, while direct correlation indicates that as one variable increases, the other also increases. Positive correlation describes a relationship where both variables increase together, which is the opposite of negative variation.

3. Which of the following lobes of the brain is primarily responsible for vision?

• A. Frontal
• B. Occipital
• C. Parietal
• D. Temporal

Correct answer: B

Rationale: The occipital lobe is primarily responsible for processing visual information. It contains the primary visual cortex, which plays a key role in interpreting visual stimuli. The frontal lobe is more associated with functions such as decision-making and problem-solving, making choice A incorrect. The parietal lobe is involved in processing sensory information but not specifically vision, making choice C incorrect. The temporal lobe is responsible for functions like memory and auditory processing, so choice D is also incorrect.

4. Which verb tense is most appropriate to complete this sentence: 'By next week, I _____ the project'?

• A. I will be finishing
• B. I will have finished
• C. I am finishing
• D. I would finish

Correct answer: B

Rationale: The correct answer is option B, 'I will have finished'. This choice correctly expresses a future event (finishing the project) that will be completed before another future point in time (next week). The future perfect tense 'will have finished' is used to show an action that will be completed before a specified future time. Choice A, 'I will be finishing', is incorrect as it indicates an ongoing action that will still be in progress by next week, which is not the intended meaning. Choice C, 'I am finishing', is incorrect as it indicates a present action that is ongoing, not a future event. Choice D, 'I would finish', is incorrect as 'would' is used for hypothetical situations or polite requests, which is not suitable in this context of a future project completion.

5. What is the principle behind optical fibers used in communication?

• A. Reflection of light within the fiber
• B. Refraction of light due to different densities within the fiber
• C. Total internal reflection guiding light through the fiber core
• D. Diffraction of light around bends in the fiber

Correct answer: C

Rationale: Optical fibers used in communication rely on the principle of total internal reflection guiding light through the fiber core. Total internal reflection occurs when light traveling through the core of the fiber is reflected back into the core due to the higher refractive index of the core compared to the cladding. This reflection ensures that the light remains confined within the core and propagates along the fiber without significant loss, allowing for efficient transmission of signals over long distances in optical communication systems. Choice A is incorrect because optical fibers do not primarily rely on simple reflection; instead, they utilize total internal reflection to guide light. Choice B is incorrect as the primary principle is not the refraction of light due to different densities within the fiber, but rather total internal reflection. Choice D is incorrect as diffraction is not the main principle behind optical fibers, which mainly rely on total internal reflection to guide light through the fiber core.

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