Correct Answer: B

Rationale: The correct answer is B, 'Worsening.' Deteriorating refers to something getting worse over time, not improving (choice A), staying the same (choice C), or fluctuating (choice D).

Correct Answer: C

Rationale: The term 'invasive' refers to a procedure that involves entering the body, usually with a medical instrument or device. In the context provided, the doctor wants to try other non-invasive or less invasive options before resorting to an invasive procedure. 'Experimental' means untested or not yet proven to be effective, which aligns with the idea of exploring alternative methods before considering a more invasive approach. Choices A, B, and D are incorrect because they do not relate to the context of trying alternative procedures that are different from invasive ones.

Correct Answer: B

Rationale: The correct answer is 'B - was.' In the original question, 'were' is incorrectly used as the verb, which should be singular to match the singular subject 'procedure.' The subject 'procedure' requires the singular form 'was' instead of the plural form 'were.' Choices A, C, and D are all used correctly in the sentence.

Correct Answer: B

Rationale: Redundancy means having more than is needed, making 'Surplus' the correct choice. The term does not relate to 'Deficiency' (lack), 'Delicate' (fragile), or 'Abundance' (plenty). In the context of this question, Redundancy refers to an excess or surplus of something.

Correct Answer: D

Rationale: The word 'throughout' means in every part of a place or thing. In this context, if the sound of the bells could be heard in the entire community, then it implies that the sound could be heard throughout the community, making 'Throughout' the most appropriate answer. Choice A 'Thorough' means complete or absolute, which does not fit the context of the sentence. Choice B 'Thought' is a past tense form of the verb 'think,' which is grammatically incorrect in this sentence. Choice C 'Through' is a preposition and does not convey the intended meaning of being heard in every part of the community.