The correct answers are: Helmer knows that there is a piece of mail from Krogstad in the box. Nora looks at her watch and tells herself she has 31 hours to live. Helmer thinks that Nora is nervous and dismisses her pleas about the mail.
Indeed, the text is both very explicit and implicit. Helmer’s character explicitly declares that he thinks a letter from Krogstad is inside his locked mailbox. Nora is very explicit about having only 31 hours to live since Helmer will discover the latter and she will take her own life due to that.
The implicit part is that Helmer, who is a very condescending chauvinist, does not take her nervousness seriously and treats her as a child that is going through one of her phases. He will read the letter whenever he wants and the only way Nora is able to keep him from doing that is to keep him busy with her until the deadline arrives.
Explanation:
"So he told her everything. "No razor has ever been used on my head," he said, "because I have been a Nazirite dedicated to God from my mother's womb. If my head were shaved, my strength would leave me, and I would become as weak as any other man." Judges 16:17
He was in love with her and she would say things like
"Then she said to him, "How can you say, 'I love you,' when you won't confide in me? This is the third time you have made a fool of me and haven't told me the secret of your great strength. " Judege 16: 15
and the
"With such nagging she prodded him day after day until he was sick to death of it.: Judges 16:16
He got tired of the nagging
He has empathy for the bee and therefore wants to free it
Answer: He has decided to kill the king