Read the passage and answer the question.
When a spacecraft is launched, most of its weight is fuel. Rockets must carry both the fuel and the oxygen to burn it, because there is no air in space. This is why engineers try to make every part of a spacecraft as light as possible, and why costs fall when parts of a rocket can be reused.
Why do rockets carry oxygen?
Answer and explanation
Correct answer: C. There is no air in space to burn fuel
- Step 1: The passage explains that there is no air in space.
Answer
There is no air in space to burn fuel.
Why not the others: The other reasons are not given.
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