Respuesta :
The correct answer is he is capable of great lies. I took the test and got this question right, so I can confirm that this is correct.
I hope this helps!
The answer is:
He is capable of great lies.
In the excerpt you can read:
"All the rest he can disguise."
In this case it is the prior sentece that it gives you the meaning of that imagery, he can trick you into believe everything he wants, other than his appearance.