The Figure Below Shows the Relationship Between Beak Depth in the Medium

Multiple Choice

The figure below shows the relationship between beak depth in the medium ground finch on Daphne Major and relative fitness.Assuming that beak depth is heritable,what do you predict about beak depth in the next generation?

A) Mean beak depth will decrease.
B) Mean beak depth will increase.
C) Mean beak depth will stay about the same.
D) Mean beak depth in the next generation cannot be predicted using this data.