It is only generally accepted to use different verb tenses when writing it in mid-sentence is the events that you want to show or describe did not happen at the same time. This would clearly show the difference in the time on when the events occurred. The answer would be option B.
Life and death, all part of an ecosystem
I cant narrow the topic much more because then it would make no sense
1. would communicate
2. didn’t drive
3. didn’t work
4. would be
5. would visit
6. bought
7. took
8. would help
1. knew
2. played
3. could
4. didn’t have
5. wasn’t
Hopefully this helps a bit-
An epic poem because they are upset and are trying to express feelings