HESI A2 Practice Vocabulary

Correct Answer: C

Rationale: The correct answer is C: Surveillance. Under observation means being watched or monitored, which aligns with the definition of surveillance. A: Cognition refers to mental processes, not observation. B: Isolation means being separated or detached, not observed. D: Assessment involves evaluating or judging, not solely observing. Therefore, C is the best fit for the given phrase.

Correct Answer: B

Rationale: The correct answer is B: Closed or obstructed. 'Occluded' means to be blocked or obstructed. This term is commonly used in various fields such as medicine and meteorology to describe a blockage or obstruction. The other choices are incorrect: A is the opposite of occluded, C suggests a partial obstruction, and D means to be enlarged rather than blocked. Therefore, B is the correct choice as it accurately reflects the meaning of 'occluded'.

Correct Answer: B

Rationale: Step-by-step rationale: 1. A parameter is a characteristic or constant factor that defines a system. 2. It is not a constant variable (A) as it is not subject to change within a given context. 3. It is not a measurable limit (C) but rather a defining aspect of a system. 4. It is not a calculated risk (D) as it is not related to potential outcomes, but rather a fixed element. In summary, choice B is correct as a parameter is a specific, unchanging factor that characterizes a system, while the other choices do not accurately define the term.

Correct Answer: B

Rationale: The correct answer is B: Praiseworthy. Exemplary means serving as a desirable model; commendable. The word has a positive connotation, indicating high quality or excellence. Choice A, Disappointing, is the opposite of exemplary. Choices C and D, Ordinary and Unacceptable, do not capture the positive and commendable nature of the term 'Exemplary.'

Correct Answer: B

Rationale: The correct answer is B: Offsetting or making up for something. 'Compensatory' means providing something to make up for a loss or deficiency. It implies an attempt to balance or counteract something negative. Choices A, C, and D are incorrect because 'Compensatory' does not mean harmful, adding unnecessary work, or hindering. It is about providing reparation or compensation to offset a negative impact.