Which sentence uses the word diaphanous correctly? Question 11 options:

His brash, diaphanous tone made his uncertainty clear.

Even though her mother shut them, Mary could see right through the diaphanous drapes to see what they were attempting to hide from her outside.

Whoever judges the acting competition has to remain diaphanous and consider everyone fairly.

I have no idea who he is; he must be diaphanous.