I think the correct one would be :
who are you going to the park with
If we want to use whom in the sentence, we had to add additional word such as 'with'
hope this helps
Explanation:
Mary swims as well as her brother doed.
Id say its c it makes the best choise
Read the sentence.
They should have divided the duties more equally among themselves.
What is the case of the underlined pronoun?
reflexive
