As far as I understood, your answer is the very last option
She should repeat the experiment to see the results.
D. — perfect future.
The reasoning being that perfect future is a verb tense that is used when there’s an action that will be completed in the future.
Hope this helps. ^^
Economy
Ecosystem
Econometrics
Ecologist
Ecology
2. A
3. B
It is b because it gives evidence for ur answer