According to the passage, cell phones are especially popular with young people because _______ A. they are indispensable in everyday communications. B. they make them look more stylish.
According to the passage, cell phones are especially popular with young people because _______
A. they are indispensable in everyday communications.
B. they make them look more stylish.
C. they keep the users alert all the time.
D. they cannot be replaced by regular phones.