Elect the correct answer from each drop-down menu.
read the adapted excerpt from act i of shakespeare's macbeth and complete the question.

macbeth:
i am thane of cawdor:
if good, why do i yield to that suggestion
whose horrid image doth unfix my hair
and make my seated heart knock at my ribs,
against the use of nature? present fears
are less than horrible imaginings;
my thought, a crime is but fantastical,
shakes so my single state of man that function
is smothered in surmise, nothing is
but what is not.

this excerpt is part of a soliloquy that reveals macbeth's . he is hesitant to go ahead with the crime. the last line refers to the theme of .