I think these are the answers:
A) My father doesn’t like dancing but I like dancing.
B) He failed his exam although he studied hard.
C) I didn’t attend my class yesterday because I was sick.
D) The phone rang while I was taking my online class.
E) We explore the internet so that we can learn many new things.
Option D is correct. Most interpretations agree that in Metamorphosis, the Kafkaesque describes a situation of Gregor struggling with his family after the transformation. Gregor is the one carrying with his kafkaesque existence and learning how to put up with himself, but his family rejects him. After Gregor dies, his family feels relieved, rather than sad.