Correct Answer: B

Rationale: A contraindication is a specific situation in which a drug, procedure, or treatment should not be used because it may be harmful. Choice A is incorrect because a contraindication advises against performing an action. Choice C is incorrect as it refers to a precaution regarding side effects rather than a reason not to proceed. Choice D is incorrect because a contraindication does not advise the use of something.

Correct Answer: D

Rationale: The word 'ruminate' means to think deeply about something before making a decision. It specifically implies reflecting or pondering carefully on a matter, indicating a thoughtful consideration process. Choices A, B, and C are incorrect. 'Imply' means to suggest indirectly, 'transgress' means to go beyond limits or boundaries, and 'allay' means to diminish or put to rest feelings of fear or suspicion. These words do not convey the concept of thoughtful contemplation before making a decision.

Correct Answer: B

Rationale: In the given sentence, the past continuous tense 'was studying' is the most appropriate choice to indicate an ongoing action in the past. 'Was preparing' (choice A) implies a completed action rather than an ongoing one. 'Had studied' (choice C) is past perfect tense, which is not suitable for indicating an ongoing action. 'Is studying' (choice D) is present continuous tense and does not fit the past context of the sentence.

Correct Answer: A

Rationale: The correct answer is A: 'patient.' The correct spelling should be 'patient.' 'Physician,' 'sodium,' and 'recommended' are all spelled correctly. 'Physician' refers to a medical doctor, 'sodium' is a chemical element, and 'recommended' is the past tense of the verb 'recommend.' Therefore, the misspelled word in the sentence is 'patient.'

Correct Answer: B

Rationale: The correct definition of bilateral is something that is present on two sides. This term is commonly used in medical contexts to describe conditions or procedures that affect or involve both sides of a particular part of the body. Choice A, 'Occurring on one side,' is incorrect because bilateral refers to both sides, not just one. Choice C, 'Occurring in random areas,' is incorrect as bilateral specifically means on two sides, not random areas. Choice D, 'Not occurring,' is also incorrect as bilateral refers to something present on two sides, not the absence of occurrence.