I think I know it but I'm not so sure of myself. Sunlight travels all the way from the Sun through Earth's atmosphere to the ground. However, sunlight does not always reach the bottom of the ocean. Which of the following best explains why little to no sunlight reaches the bottom of the deepest oceans?
A. Light is reflected by deep ocean currents.
B. Light travels more slowly in water and is absorbed.
C. Light changes speed as it gets farther from the Sun.
D. Light is reflected off the ocean's surface and back into the air.