Answer:
the answer is c I think .
An intransitive verb can't be followed by "what"; here it's b); skates.
You can't say "she skates what?"
the rest can be followed by "what", for example: Jenna chose what? (whom?) as her partner? Ian sharpened what?
No lo se ni te endiendo de lo que estas hablando
The correct answer should be D. <span>A bear was heard snorting near our camp last night.
In order for it to be active you would say "We heard a bear snort near our camp last night". Was + heard is used to create a passive construction. Other sentences are in active voice.</span>