Question

of late with passions of some difference,
conceptions only proper to myself,
which give some soil, perhaps, to my behaviours.
but let not therefore my good friends be grieved-
among which number, cassius, be you one-
nor construe any further my neglect
than that poor brutus, with himself at war,
forgets the shows of love to other men.
cassius. then, brutus, i have much mistook your passion,
by means whereof this breast of mine hath buried
thoughts of great value, worthy cogitations.
tell me, good brutus, can you see your face?
brutus. no, cassius, for the eye sees not itself,
but by reflection, by some other things.
what does brutus tell cassius is the reason he
has been acting strangely lately?
brutus says he does not like caesar.
brutus says his wife is not supportive of him.
brutus says he thinks that cassius cannot be trusted.
brutus says he has been troubled by his own inner
conflicts.

Explanation:

Brutus mentions "poor Brutus, with himself at war" which indicates internal conflict. The other options (not liking Caesar, wife not supportive, not trusting Cassius) are not mentioned in the given text.

Answer:

Brutus says he has been troubled by his own inner conflicts.