You can keep a listener engaged with your speech by keeping things personal and using...

A: he, she, it

B: them, those, their.

C: I, my, we, our and you.

D: whatever you like, It doesn't matter.​

When you are speaking to someone you speak to them with respect so d doesn’t work it has to be c because you aren’t only talking about your opinion but you are also talking about other peoples opinions and what they think so the answer is c

The answer is c because you are being formal in a way and polite