Answer:
a. while
Explanation:
My phone rang while I was in the meeting.
Answer:
In an expository paragraph, you give information. You explain a subject, give directions, or show how something happens
Explanation:
I'd say option B, because that is how the story or the main problem was "resolved" (as the phrase suggests) or taken care of.
1) endothermic
2) exothermic
3) exothermic
4) endothermic
5) endothermic
6) endothermic
7) Evaporating liquid water
8) Photosynthesis