The effect of one of the most famous soliloquys in literature, Hamlet's, is to illustrate that Hamlet is going insane.
He contemplates whether to do it or not, which ultimately drives him mad for revenge.
Answer:
The first option: They spent the entire period working on an in-class assignment.
Answer:
Should be the one you have highlighted!
Explanation:
The other ones all seem to be opinions, and this one has facts.