Meaning: 'Leans' means to have a tendency or inclination towards something.

Wrong options:

• elaborates: Elaborates is a verb that means to explain in more detail, which does not fit the context of describing a tendency.
• depcits: Depicts is a verb that means to represent or portray, which does not convey the idea of inclination or tendency.
• merit: Merit is a noun that refers to the quality of being particularly good or worthy, which does not fit as a verb in this context.
• instructions: Instructions is a noun that refers to directions or orders, which does not fit grammatically as it does not convey an action.

Correct answer: merit

Explanation: The noun 'merit' refers to the quality of being worthy or deserving, which fits contextually as it acknowledges that there is some validity to the argument against holistic medicine. It serves as a subject complement in this context.

Meaning: 'Merit' means the quality of being particularly good or worthy, especially to be praised or regarded favorably.

Wrong options:

• stem: Stem is a verb that means to originate or derive from, which does not fit as it does not convey a quality or value in this context.
• elaborates: Elaborates is a verb that means to explain in more detail, which does not fit as it does not convey a quality or value.
• depcits: Depicts is a verb that means to represent or portray, which does not fit as it does not convey a quality or value.
• instructions: Instructions is a noun that refers to directions or orders, which does not fit as it does not convey a quality or value.

Correct answer: stem

Explanation: The verb 'stem' indicates the origin or cause of something, which fits grammatically and contextually as it describes the source of the defensive behavior of proponents of holistic medicine. It aligns with the overall meaning of the sentence.

Meaning: 'Stem' means to originate or derive from a particular source or cause.

Wrong options:

• elaborates: Elaborates is a verb that means to explain in more detail, which does not fit as it does not convey the idea of origin or cause.
• depcits: Depicts is a verb that means to represent or portray, which does not fit as it does not convey the idea of origin or cause.
• leans: Leans is a verb that indicates a tendency, which does not fit in this context as it does not convey the idea of origin or cause.
• merit: Merit is a noun that refers to the quality of being particularly good or worthy, which does not fit grammatically as it does not convey an action.