Pretty sure it's the First and Third sentence.
Answer:
3. complex sounds, such as noises and voices, to pure tones
Explanation:
Newborns and babies are extremely sensitive to sounds like noises and voices, and are able to distinguish sound patterns as well as any sound of any language they are exposed to. Besides, in their first months, babies are able to perceive tempo and rhythm, and they can also identify musical tunes before their first year.
I think the answer are A & B.
Excessive social media use can not only cause unhappiness and a general dissatisfaction with life in users, but also increase the risk of developing mental health issues such as anxiety and depression.
