Answer:
Adversity particularly applies to a state of grave or persistent misfortune (as in "a childhood marked by great adversity"). Mishap suggests an often trivial instance of bad luck (as in "the usual mishaps of a family vacation").
Explanation:
I just translate your question
:->
Answer:
I don't know very very sorry
Answer:
C
Explanation:
because it gives a cause he didn´t do his work and the effect is that he got a bad grade
