Answer:
Remember: If the subject is performing the action, then the sentence is in active voice. If the subject is simply receiving the action, then the sentence is in passive voice. Shift the object of the action into the beginning of the sentence.
Example:
You did not pay your bill.
The best option would be C. Peace activist : war.
Abolitionist is same as peace activist. Slavery is similar to war.
Paradox! "Make haste" means to hurry up, while slowly is the opposite, meaning with low speed. Therefore this two words/phrase contradict each other and the answer is a paradox.
Pilars of the sky at rest