Which theme from macbeth do these lines support?

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?

a. darkness is dangerous.
b ambition unchecked can lead to corruption.
c. things are not always what they seem.
d. those without convictions are easily manipulated.

The correct answer here is C. The lines '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?' most likely refer to the theme that things are not always what they seem. This is illustrated by the fact that the character is negating the fact that something is good through referring to events that have unsettled them.

By how to move the wires