Read the passage, then answer the question that follows. Which revision best corrects the underlined sentence
Scientists have studied the benefits of hobbies having a
O Scientists have studied the benefits of hobbies.
pastime reduces stress. It can improve mood, help
Having a pastime reduces stress.
memory, and strengthen friendships. Relaxing hobbies
such as knitting or bird-watching reduce cortisone, the
Scientists have studied the benefits of hobbies.
stress hormone. Some hobbies, such as sports and clubs, having a pastime reduces stress,
encourage friendships, and numerous studies have found
Scientists have studied the benefits of hobbies, bu
a connection between relationships and happiness.
having a pastime reduces stress.
Scientists have studied the benefits of hobbies:
however, having a pastime reduces stress,​