Which sentence could best be removed from this paragraph to clarify its ideas?

a)needless to say, franklin never got bored in the summer.
b)franklin also liked to do a lot of other things in the summer too--play
soccer, play video games, and just read.
c)his parents were seriously wondering if they might not better go ahead
and just buy a video recording device for franklin.

d)the moment he figured out how to use his mother's smartphone to record
videos, he began using the phone every minute of the day.