HESI A2 Vocabulary 2024

Correct Answer: C

Rationale: Step 1: In a research study, a placebo is an inactive substance given to participants to compare the effects of the active treatment. Step 2: The purpose of a placebo is to serve as a control group for comparison with the group receiving the experimental drug. Step 3: Therefore, the meaning of 'placebo' in the sentence is 'control' as it is used for comparison purposes. Step 4: Choice A (Fallback) and D (Curative) do not accurately describe the role of a placebo in this context. Step 5: Choice B (Substitute) is not the best fit as the placebo is not substituting the actual treatment, but rather serving as a comparison point. Summary: The correct answer is C (Control) because a placebo is used as a comparison group in research studies, not as a fallback, substitute, or curative treatment.

Correct Answer: D

Rationale: The correct answer is D: Wrap. In the context of the sentence, "swathe" is used to indicate covering or wrapping the baby. The word is often associated with wrapping something in fabric or material. The other choices - Nurse, Cleanse, Change - do not align with the action of covering or wrapping the baby as described in the sentence. "Nurse" refers to caring for someone, "Cleanse" means to clean or purify, and "Change" implies altering or replacing something, none of which fit the context of the sentence. Therefore, option D is the most appropriate choice as it accurately reflects the meaning of 'swathe' in this context.

Correct Answer: D

Rationale: The correct answer is D: Composed. Unruffled means calm and composed, so the word "composed" is a synonym for unruffled. "Concerned" means worried or anxious, opposite of unruffled. "Wholesome" means healthy or good, unrelated to unruffled. "Tedious" means boring or monotonous, also unrelated to unruffled. Therefore, the best choice is "Composed" as it aligns with the meaning of unruffled.

Correct Answer: C

Rationale: The correct answer is C: assumed. "Hypothetical" means based on an assumption or guess, not proven. It is not synonymous with "rigorous" (A), which means thorough and precise. It is also not related to "short-term" (B), which refers to a brief duration. Furthermore, "convinced" (D) implies a state of belief or certainty, which is contrary to the tentative nature of something that is hypothetical. Thus, the most suitable definition for hypothetical is "assumed" as it reflects the uncertain and speculative nature of a hypothesis.

Correct Answer: D

Rationale: The correct answer is D: recurring. A chronic condition is one that persists over a long period of time or reoccurs frequently. This term specifically refers to a condition that is ongoing or repetitive in nature. A: harmless - This choice does not describe the duration or frequency of the condition, only that it is not harmful. B: critical - This choice implies the condition is severe or urgent, which is not necessarily the defining characteristic of a chronic condition. C: contagious - This choice refers to the ability of a condition to spread from person to person, which is not related to the duration or frequency of the condition.