10. In which of the following sentences does the word composed mean made up?

Answer: A

Explanation:

Collagen is composed of polypeptide strands called fibrils.

The word composed in this context refers to the idea of being made up of different components, which aligns perfectly with the definition needed for this question.

A) Collagen is composed of polypeptide strands called fibrils.

This sentence uses "composed" to indicate that collagen is made up of polypeptide strands. It clearly conveys the meaning of composition in a scientific context, demonstrating that collagen is structurally formed from these specific components.

B) Outwardly, she appeared remarkably composed, but inwardly she was a nervous wreck.

In this instance, "composed" refers to a state of calmness or self-control rather than being made up of parts. The focus here is on the person's demeanor, not on the concept of composition in terms of physical components.

C) Wolfgang Amadeus Mozart lived and composed in eighteenth-century Vienna.

Here, "composed" relates to the act of creating music rather than indicating a made-up structure. This usage emphasizes the action of writing music, not the idea of being made up of different parts.

D) Emily composed a sternly worded email but decided to wait until the morning before hitting Send.

Similar to option C, the term "composed" in this sentence refers to the act of creating text. It does not imply that something is made up of components, but rather highlights the action of writing.

Conclusion

The correct answer, A, distinctly illustrates the meaning of composed as it relates to being made up of constituent elements. All other options utilize "composed" in contexts that pertain to calmness or the action of creating, thus failing to meet the requirement of the question.