Which One of the Following Pairs of Children Best Illustrates

Which one of the following pairs of children best illustrates a difference in temperament?

A) Monique enjoys dancing; Jillian prefers singing.
B) Henri likes to spend his time reading; Matt would rather watch a good movie.
C) Saidi is very sociable and outgoing; Krista is more quiet and reserved around peers.
D) Dan likes to think about abstract ideas; Michael learns more effectively when he can manipulate concrete objects.