Read the text and answer the question. Penguins are flightless birds that live mainly in the Southern Hemisphere. They have adapted to life in the water, with wings that act like flippers for swimming. Although they cannot fly, their strong legs and webbed feet make them excellent swimmers and divers. Many years ago, some penguin species were hunted for their oil, which led to a decrease in their population. Today, conservation efforts are helping to protect them.
A) Because they can fly.