Correct Answer: C

Rationale: The word 'formulaic' means following a formula or set pattern. Therefore, something that is systematic and follows a structured plan can also be described as formulaic. Choices A, B, and D are incorrect. 'Involuntary' means done without will or conscious control, 'universal' means affecting, or done by all people or things in the world, and 'manual' means operated or done by hand rather than automatically or electronically. Therefore, 'formulaic' is the most accurate synonym in the given context.

Correct Answer: B

Rationale: A hemostat is a surgical tool used to limit or control bleeding by clamping blood vessels during a surgical procedure. It helps to prevent excessive blood loss and maintain a clear surgical field, making it an essential instrument for managing bleeding during surgeries. Choices A, C, and D are incorrect as a hemostat is not used to limit pain, fever, or coughing, but specifically to control or limit bleeding.

Correct Answer: B

Rationale: In the sentence, "laceration" is referring to a deep cut or tear in the skin. It is often associated with injuries that are caused by sharp objects or trauma. Therefore, the most appropriate meaning of "laceration" in this context is a cut.

Correct Answer: B

Rationale: Verified means confirmed or proven to be true. When something is verified, it has been established as factual or accurate through thorough examination or evidence. It is the opposite of belittled, anecdotal, or implicit, as those terms do not convey the sense of confirmation or validation that verified does.

Correct Answer: C

Rationale: In the context of the sentence, the word 'placebo' refers to a substance or treatment that resembles a real medical treatment but has no therapeutic effect. It is used as a standard against which the effects of the experimental drug are compared. A placebo is typically included in a control group in medical research to evaluate the actual effects of the experimental drug. Therefore, in this scenario, the placebo serves as a control to gauge the effectiveness of the experimental drug, making choice C the correct answer. Choices A, B, and D are incorrect because a placebo is not a fallback, substitute, or curative treatment in this context.