Answer:
I think it will be perspire
The two details that best support the theme that loyalty to one's spouse is important are "Portia's insistence that she will not tell Brutus's secrets to anyone" and "Portia's self-inflicted wound to prove that she is constant".
Explanation: Portia is urging for Brutus to trust her as his wife, and she argues that she has already proven her loyalty to him.
