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: B

Rationale: The correct answer is B: Confirmed. Verified means to confirm the accuracy, truth, or validity of something. It involves ensuring that information or data is accurate and reliable. Belittled (A) means to make someone or something seem less important. Anecdotal (C) refers to personal accounts or stories that may not be verified. Implicit (D) means implied but not directly stated. Therefore, B is the correct answer as it aligns with the definition of verified.

Correct Answer: D

Rationale: Certainly! The term "doleful" means expressing sorrow or sadness, which aligns with choice D, "Downcast." This word typically describes someone who is mournful or depressed. Choice A, "Unwell," does not capture the emotional aspect of doleful. Choice B, "Deprived," focuses on lacking something rather than expressing sadness. Choice C, "Conceited," is unrelated as it refers to having an excessively high opinion of oneself. Hence, "Downcast" is the best description for doleful due to its direct association with feelings of sadness or sorrow.

Correct Answer: B

Rationale: The correct answer is B: parasite. A nit is a term used to refer to the egg or young form of a louse or other parasitic insect. Nits are commonly found in hair and are a common sign of a head lice infestation. Choice A (abscess) is incorrect because an abscess is a localized collection of pus caused by an infection. Choice C (bandage) is incorrect because a bandage is a material used to cover and protect wounds. Choice D (infection) is incorrect because an infection is a condition caused by the invasion of harmful microorganisms into the body. Therefore, the correct answer is B as nits specifically refer to parasites, such as lice eggs.

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.