Speaking about julius caesar acts iv and v for english 2.
why does portia commit sui?
(a) she is distraught by her husband's untimely death in the battle of philippi.
(b) she is distraught by the belief that antony and octavius have risen to power.
(c) she is distraught by the discovery that brutus and antony have betrayed her.
(d) she is distraught by the power struggles taking place since caesar's death.

B

Explanation:

"BRUTUS: Impatient of my absence,

And grief that young Octavius with Mark Antony  

Have made themselves so strong—for with her death  

That tidings came. With this she fell distract,  

And, her attendants absent, swallow'd fire."

(Act IV, Scene 3)

This basically explains how she was upset about Octavius and Antony gaining more power. Hope this helps!

you need need more details so we can understand what your asking us.