Read the excerpt from act 2, scene 1, of julius caesar.

casca. you shall confess that you are both deceived.
here, as i point my sword, the sun arises,
which is a great way growing on the south,
weighing the youthful season of the year.
some two months hence up higher toward the north
he first presents his fire, and the high east
stands, as the capitol, directly here.

brutus. give me your hands all over, one by one.

cassius. and let us swear our resolution.

brutus. no, not an oath. if not the face of men,
the sufferance of our souls, the time’s abuse—
if these be motives weak, break off betimes,
and every man hence to his idle bed.

what effect does cassius's request to swear a resolution have on brutus?

brutus decides to leave the resistance and warn caesar.
brutus decides that the resistance's motives are weak.
brutus tells everyone to go back to bed because it is too early.
brutus says that swearing a resolution is not necessary to fight tyranny.