Gloat in the sentence means to brag. Basically, the third selection. "To make fun of someone."
Hopefully this helps :)
1. Fragment.
2. Complete sentence.
3. Run-on sentence.
4. Complete sentence.
5. Complete sentence.
I hope I could help.
The question is asking to choose among the following that states the genre of a fiction that are notable in franz kafka's The metamorphosis, base on my research, I would say that the genre would be Realistic. I hope you are satisfied with my answer and feel free to ask for more