I believe B would be the answer, as the subject closest to the verb (rolls) corresponds to the verb (when there is an "or" or "nor" in a sentence, the verb should correspond to the subject closest to it). For A, "adding machine" should correspond to "make," but it doesn't. For C, the subject is plural (team members and the coach), but the verb is singular; the case is the same for D.
Answer:
1. Astronaut should be brave, determined, adaptable, and smart.
2. The atmosphere should be clean because if it isn't it can cause problems to the environment. Like global warming, it is harming the planet and our weather, etc.
Explanation:
I think the right one is A
The main idea behind it is that life is short and that we need to laugh and be happy while we have time and not focus on negative things because life is short. If life hits you in the teeth there's no reason to be depressed forever about it, just laugh and be happy and keep moving on.
