The Streamlined Shape of the Dolphin, Seal, and Other Swimming

Multiple Choice

The streamlined shape of the dolphin, seal, and other swimming animals is most important for which of the following reasons?

A) reducing drag from the water they must swim through
B) overcoming the forces of gravity acting on the animal
C) reducing the density of the water they must swim through
D) maintaining a low speed in the dense medium
E) All of the choices for this question are correct