I like to go to the lake. I like to run on the shore and fly kites. Swimming in the lake is fun, and so is flying kites. I like to ride on the paddleboats, too. Going to the lake is great fun.

One idea is repeated in the paragraph above. Which idea is repeated?

A.Riding paddleboats.
B.Swimming is fun.
C.Flying kites.
D.Running on the shore.​