HESI A2 Practice Test Vocabulary

Correct Answer: C

Rationale: Rationale: 1. 'Impervious' means not affected or unaffected by something. 2. In the given sentence, it implies that the subject is not impacted by something. 3. Choices A, B, and D do not align with the meaning of 'impervious.' 4. Choice A suggests coping well, which is different from being unaffected. 5. Choice B implies enjoyment, unrelated to being unaffected. 6. Choice D suggests being very sensitive, opposite to being impervious.

Correct Answer: B

Rationale: The correct answer is B: Convulsion. A paroxysm is defined as a sudden spasm or seizure, which is synonymous with convulsion. Symptom (A) refers to an indication of a condition, not the same as a spasm. Efficacy (C) means the ability to produce a desired or intended result, unrelated to sudden spasms. Embolism (D) is a blockage of a blood vessel, not related to spasms. Therefore, the correct choice is B as it directly relates to the sudden spasm characteristic of a paroxysm.

Correct Answer: C

Rationale: The correct answer is C: "They're, their." Step 1: "They're" is a contraction for "they are," indicating the subject of the sentence having trouble. Step 2: "Their" is a possessive pronoun showing ownership of the new dog. Therefore, the correct usage is "They're having trouble with their new dog." Other choices are incorrect because: A: "There, their" - "There" is an adverb indicating a place, not suitable in this context. B: "Their, there" - Incorrect word order, as "their" should come before the verb. D: "Their, they're" - Incorrect usage of "they're" as a possessive pronoun.

Correct Answer: C

Rationale: The correct answer is C because the word "environment" refers to the surroundings or conditions in which a person, animal, or plant lives or operates. It encompasses both external factors (like physical surroundings, social interactions, etc.) and internal factors (like mental, emotional, and physical well-being). Choices A, B, and D are incorrect as they do not accurately capture the comprehensive nature of the term "environment." A refers more to societal concepts, B is too narrow in focus, and D is limited to a specific aspect of a home environment. Therefore, C is the most appropriate choice as it encapsulates the full scope of the term "environment."

Correct Answer: D

Rationale: The correct answer is D: Basic. In the context of the sentence, 'fundamental' means basic, essential, or foundational. The term 'fundamental' refers to something that is crucial, primary, or indispensable. It is not synonymous with the other choices. A: Appropriate does not capture the essence of 'fundamental.' B: Underlying is related but doesn't fully convey the sense of essentialness. C: Dosage is completely unrelated to the meaning of 'fundamental' in this context. So, the correct choice is D as it best aligns with the meaning of 'fundamental' in the sentence.