Vocabulary HESI A2 Practice Test

Correct Answer: B

Rationale: The correct answer is B: Swift. The word "precipitous" is used to describe something that happens very quickly or suddenly, often in a steep or rapid manner. It is synonymous with abrupt or hasty. Choice A (Gradual) is incorrect because it is the opposite of what "precipitous" means. Choice C (Slow) is incorrect because it implies a lack of speed or swiftness. Choice D (Delayed) is incorrect because it refers to something that happens after an expected or intended time, which is not the primary meaning of "precipitous."

Correct Answer: B

Rationale: The correct answer is B: Changing rapidly and often. Labile means easily altered, unstable, or constantly changing. This term is commonly used in psychology and medicine to describe emotions or conditions that fluctuate frequently. Choice A (Stable) is incorrect because labile implies the opposite of stability. Choice C (Unchanging) and choice D (Rarely changing) are also incorrect as they do not align with the definition of labile, which specifically denotes frequent changes.

Correct Answer: B

Rationale: The correct answer is B because hygiene refers to practices that promote cleanliness and good health. This includes actions such as handwashing, proper sanitation, and personal grooming. Option A is close but doesn't emphasize the preventive aspect. Option C is incorrect as hygiene is not specifically related to dietary health. Option D is incorrect as hygiene is not a type of infection but rather a set of practices to prevent infections.

Correct Answer: B

Rationale: The correct answer is B: Vague. NEBULOUS means unclear or lacking definite form. It is synonymous with vague. In contrast, A: Clear, C: Precise, and D: Obvious all indicate clarity and definiteness, which are the opposite of nebulous. Therefore, the correct answer is B as it best captures the meaning of nebulous.

Correct Answer: A

Rationale: The correct answer is A: Widespread. Ubiquitous means something that is present or found everywhere. This word conveys the idea of being widespread or omnipresent. The other choices are incorrect because B: Miniscule means very small, C: Invalid means not valid or acceptable, and D: Unit refers to a single entity or a distinct part. Therefore, only choice A aligns with the definition of ubiquitous.