PLEASE HELP Penguins are unusual birds. They swim under water but do not fly. Penguins live in some of Earth's coldest climates, where they feed on sea animals. Unlike most birds, a penguin had solid bones. How does this adaptation aid a penguin in survivng?

A. The solid bones allow penguins to dive deep under water.

B. The solid bones allow penguins to detect fish under water.

C. The solid bones allow penguins to stay warm under water.

D. The solid bones allow penguins to hold its breath under water.

E. The solid bones allow penguins to fly higher than most birds.