Question

in lines 175- 177 of scene 5, hamlet tells horatio and marcellus that he might soon have to pretend to act strangely. what does tis comment suggest about how he will try to carry out his revenge

Answer 1

This shows that he feels like he might have to be in places he isn't supposed to be, or ask questions/have conversations that might seem out of place if he is acting 'normally'. If he is acting crazy, people will  be more likely to focus on that rather than what he is doing around the castle.