HESI A2 Practice Test 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. Surveillance involves keeping a close watch over someone or something. Cognition (A) refers to mental processes, Isolation (B) means being separated or alone, and Assessment (D) involves evaluating or judging. These choices do not directly relate to being under observation.

Correct Answer: A

Rationale: The correct answer is A: Prefix. A prefix is a word part placed before a base word to change its meaning. It comes before the root word and alters its definition. Prefixes are essential in forming new words and expanding vocabulary. Choice B: Affix is a broad term that refers to both prefixes and suffixes. While technically correct, it is not as specific as prefix in this context. Choice C: Suffix is a word part placed after a base word to change its meaning. It is the opposite of a prefix. Choice D: Vocab is short for vocabulary and does not relate to the word part placed before a word to change its meaning.

Correct Answer: A

Rationale: The correct answer is A: Regimen. A regimen refers to a systematic plan or set of rules to follow, which aligns with the phrase 'a system of procedures to follow'. Regime (B) typically refers to a government or ruling system, not specific procedures. Testament (C) refers to a will or statement of belief, unrelated to procedures. Treatment (D) refers to medical care or a way of dealing with something, not a set of procedures. Therefore, A is the best choice as it directly reflects the meaning of the given phrase.

Correct Answer: A

Rationale: The correct answer is A: Undesirable. In the context of the sentence, 'adverse' refers to negative or harmful effects. The word 'adverse' is commonly used to describe something that is unfavorable or harmful. In this case, the man is experiencing negative side effects from his medication, making 'undesirable' the most fitting interpretation. Incorrect Choices: B: Frequent - Frequency is not the primary meaning of 'adverse' in this context. C: Noticeable - While side effects may be noticeable, 'adverse' implies more than just being noticeable. D: Constant - 'Adverse' does not necessarily mean constant, it means unfavorable or harmful.

Correct Answer: C

Rationale: The correct answer is C: Easiest. In this sentence, the superlative form "the" is used before the adjective "easiest" to indicate the highest degree of comparison. "Most easiest" (A) is incorrect as "most" is redundant with the superlative form. "Most easy" (B) is incorrect as "easy" should be in the superlative form. "Easy" (D) is incorrect as it is not in the superlative form needed for this context.