How do the soldiers' feelings about macbeth in act i differ from their later
feelings about him in act v?
a. in act i, they think he is brave and honorable; in act v, they think he
is an insane tyrant who must be defeated.
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b. in act i, they think he is a bully; in act v, they believe he will make a
good king if given enough time to rule,
c. in act i, they are jealous of his rise to power; in act v, they feel
sorry for him and the burdens he bears.
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d. in act i, they are frightened of his fierceness; in act, they are
afraid of what horrible crimes he will commit next.

A. In Act I, they think he is brave and honorable; in Act V, they think he  is an insane tyrant who must be defeated.

Explanation:

It is very easy for everyone around Macbeth to notice that his desire to become a king makes him go insane. At the beginning of the play, Macbeth shows great courage during the battle, and is praised for defeating the rebel forces and their leader Macdonwald.

However, Macbeth gradually becomes insane. Driven by his desire to become a king, he murders both king Duncan and Banquo, which not only ruins his reputation, but makes the soldiers turn their back on him. In Act V, when Malcolm and Macduff approach Macbeth's castle, many soldiers desert Macbeth. They have realized what he has done, and see no point in fighting on his side anymore.

"facing the rising sun of our new day begun

let us march on till victory is won.",

because the rising sun is a symbol of hope.