Answer:
D
Explanation:
If you were to replace any of the other options where "case" is, none of them make much sense.
b
the detective was trying very hard to solve the case
not sure what the question is......
because they might not spend a lot of time doing another thing as much as how much time they spend doing what they're good at
that is a car .
The sun is bright .
there are many cars.
i hope you get your answer
