A Sparrow Population Currently Eats Seeds That Are Mostly of Medium

Multiple Choice

A sparrow population currently eats seeds that are mostly of medium size.Which condition will most likely lead to more directional selection?

A) A decrease in population size of the sparrow
B) More seeds that are either considerably smaller or considerably larger than average, with fewer of intermediate size
C) More seeds that are intermediate in size
D) More seeds that are somewhat larger than average and fewer that are smaller than average
E) A reduction in the overall number of seeds, with no change in the distribution