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Question:

Which of these sentences represents a summary sentence for the passage?

A A spacesuit is much more than a set of clothes astronauts wear on spacewalks.
Explaination

Since the passage discusses all the different, important components of a spacesuit, the correct choice will likely mention the word “spacesuit” and impress upon the reader its importance. This answer does this without bringing up new information, as the other choices do. A summary should stick to what information is already presented in the passage.