Question

Hearing and listening ___________________.

Answer 1

The answer is C. Are completely different

Hearing does not require your focus and attention, it happen involuntarily. For example you will hear the sound of an engine every time a car pass by. 

Meanwhile, Listening require focus and attention. Compared to hearing, the amount of information that you could process by listening is way greater. For example , you need to focus your attention when you're listening to a lecture