I think the answer is C.
I figured this out because if they asked 12 people and 8 thought that their boss is understanding and 96 people work there I figured they asked 1/8 of the workers and 4/6 thinks he is an understanding person.
96 divided by 12 = 8
96 divided by 6 = 16 and 16 x 4 = 64
Hope this helps.