If the paragraph is about military, then it is D. If you want a more specific answer, then show the paragraph please.
Answer:
B.) a character suffers from a serious illness and eventually dies
D indicate repetition of an idea
Answer:
Bees are powerful pollinators. ...
Beavers combat climate change. ...
Llamas patrol farms. ...
Rats detect landmines. ...
Squirrels help trees take root. ...
Narwhals assist scientists. ...