Correct Answer: B

Rationale: The correct answer is 'B: Entering into a body part.' 'Invasive' refers to something that invades or penetrates into a body part. Choice A, 'Harmless,' is incorrect as invasive implies a negative impact. Choice C, 'Mildly irritating,' is incorrect as invasive implies a more serious intrusion. Choice D, 'Non-penetrative,' is incorrect as invasive specifically denotes penetration or entry.

Correct Answer: B

Rationale: The correct answer is B: Misgivings. Trepidation means a feeling of fear or apprehension. In this context, the student observed the procedure with a certain amount of trepidation, indicating that they were feeling uneasy or fearful. Choices A, C, and D are incorrect. Confidence (choice A) is the opposite of trepidation, as it denotes a feeling of self-assurance. Fear (choice C) is the closest synonym to trepidation, making it an attractive distractor, but it is not the correct answer. Doubt (choice D) is different from trepidation, as doubt refers to a feeling of uncertainty or lack of conviction, not necessarily fear or apprehension.

Correct Answer: A

Rationale: Regulations refer to rules or directives established by authorities to govern conduct or actions. Therefore, the correct answer is A - 'Rules for Conduct.' Choice B, 'Official Standards,' is incorrect as regulations go beyond just setting standards to include specific rules for behavior. Choice C, 'Personal Guidelines,' is incorrect as regulations are not individualized but are generally applicable rules. Choice D, 'Suggestions,' is incorrect as regulations are mandatory and carry legal weight, unlike suggestions which are optional and not binding.

Correct Answer: A

Rationale: The correct choice is A - Affable (friendly). Affable means friendly and easy to get along with, which aligns with the description of the new manager in the sentence. Choice B, Tortuous, means twisting or complicated, which does not describe the manager's demeanor. Choice C, Apathetic, means showing no interest or enthusiasm, which is the opposite of the manager being easy to get along with. Choice D, Sacrosanct, means holy or sacred, which is not relevant to the context of the sentence.

Correct Answer: B

Rationale: The correct answer is B: 'Able to be heard.' Audible refers to something that can be heard. Choice A, 'Impossible to hear,' is the opposite of the meaning of audible. Choice C, 'Visible,' is unrelated as it pertains to sight, not hearing. Choice D, 'Silent,' is also not correct as it refers to the absence of sound, which is different from something being able to be heard.