The diagram shows adaptations of a camel, an animal that lives in dry conditions. Which statement correctly explains how a trait developed in the camel species?

A Camels with extra-thick kneepads survive and reproduce well in all environments.
B Camels that stored more nutrients in humps survived and reproduced in the dry environments.
C Camels with webbed feet can swim in aquatic environments.
D Camels that eat soft aquatic plants developed a tough, leathery mouth to digest food in dry environments.