Answer: The statement above is absolutely true.
Explanation: During our sleep we pass through five stages of sleep. 5th stage of the sleep is of great importance and is known as REM sleep aka rapid eye movement sleep. During this stage heart rate, breathing and eye movement increases. According to the researchers of Neuro-scientists Rem sleep helps the brain rewire itself and integrates new memories and train the mind for important tasks to be done next day.
Regulation of growth and forming of organs
All of the above is the answer for this question
The first years of life is the period to acquire speech as well as language skills. It would be best develop with sounds as well as sights and constant exposure to the language and speech. There are 4 language skills namely listening, speaking,writing and reading in which the 2 latter ones are not develop during infancy.