Answer:
I'm sorry what are you trying to say
The answer is C owing to the fact that C it a pre-noun past participle phrase.
drones
Drones are male bees. They do not have stingers and do not collect nectar or pollen. The drones sole purpose is to mate with the queen bee. Female bees have stingers and do all the work to collect the pollen and nectar. They do not have the reproductive capabilities of the queen bee.