Which of the following best describes how a species changes over time?

A

Members of a species that are best adapted to survive and members with unfavorable traits both produce the same number of offspring.

B

Members of a species that are best adapted to survive produce offspring with similar characteristics, while members with unfavorable traits do not survive.

C

Diversity among members of the species causes all members to stop producing offspring.

D

Members of a species with unfavorable traits produce offspring with similar characteristics, while members best adapted to survive do not reproduce.