And the silken sad uncertain rustling of each purple curtain
thrilled me–filled me with fantastic terrors never felt before;
so that now, to still the beating of my heart, i stood repeating
"'tis some visiter entreating entrance at my chamber door–
some late visiter entreating entrance at my chamber door;
this it is and nothing more."
in this stanza, the poet creates suspense by having the speaker
a.)be afraid and unsure of what the noise really is.
b.)realize the wind is moving the purple curtains.
c.)see a visitor outside of his bedroom door.
d.)get up and stand next to his bedside.

A.)be afraid and unsure of what the noise really is.

In the stanza the speaker describes the rustling of the curtain as "uncertain". He also says that the sound "thrilled me-filled me with fantastic terrors". He knows that the curtain is doing the rustling, but he isn't sure what is making the curtain rustle. It makes his heart beat loud and and fills him with terrors. This all shows that he is afraid of what may be behind his chamber door.

The other options are simply not true. Knowing that it is the wind does not create suspense. He doesn't see a visitor and we don't know if he is standing next to his bedside. The only thing that creates suspense in this passage is his fear of the unknown.

from: "the tragedy of julius caesar by william shakespeare: act 1 "

the correct answer is:

act 1 opens with the forum in celebration and ends with it in chaos.

reasoning from several particular examples to establish a general principle