Correct Answer: B

Rationale: The correct answer is 'B: Abrupt.' In this context, 'precipitous' is used to describe a change that occurs suddenly or abruptly. Choice A ('Difficult') is incorrect as it does not capture the sudden nature of the change. Choice C ('Gentle') is incorrect as it conveys the opposite meaning of 'precipitous.' Choice D ('Unanticipated') is incorrect as it focuses on the element of surprise rather than the suddenness of the change.

Correct Answer: B

Rationale: The correct answer is B, 'Volatile.' In this context, 'labile' means having an unpredictable or changeable condition. Choice A, 'Fevered,' is incorrect as it relates to having a fever, not the intended meaning of 'labile.' Choices C and D, 'Stomach' and 'Vision,' are unrelated to the context of the sentence and do not reflect the meaning of 'labile' as 'volatile.'

Correct Answer: D

Rationale: The term 'posterior' refers to the back of the body. Therefore, the correct answer is 'Back.' Choices A, B, and C are incorrect. 'Topmost' and 'Lowermost' do not specifically refer to the back of the body, and 'Front' is the opposite of 'Back.'

Correct Answer: B

Rationale: The correct answer is 'Me.' In this sentence, 'me' is the correct object pronoun to use after the preposition 'to.' 'Myself' is a reflexive pronoun used when the subject and object of the sentence refer to the same person, which is not the case here. 'Us' is the object form of 'we,' which is incorrect in this context. Therefore, 'Me' is the most suitable choice.

Correct Answer: A

Rationale: The correct answer is A: 'Measures contributing to cleanliness.' In the given sentence, 'hygiene' refers to practices that promote cleanliness and health, such as washing hands, taking showers, and maintaining a clean environment. Choice B, 'Financial resources,' is incorrect as hygiene does not pertain to money matters. Choice C, 'Insurance,' is unrelated to the concept of hygiene. Choice D, 'Friendliness,' is also incorrect as it does not align with the context of personal cleanliness and health.