Energy needs, in total kilocalories per day, are greater during than any other time of life. a. childhood b. infancy c. adulthood d. adolescence

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Energy needs, in total kilocalories per day, are greater during "ADOLESCENCE" than any other time of life.

Adolescence is the period that follows the onset of puberty and this is when a young person develops from a child into an adult.

This is characterized by

Physical development

Psychological development

Cognitive development

Emotional development

Social development

since you have not provided the options here i   am going to give you general overview about hormone.hormone are actually the part of endocrine system in our body and produced by the endocrine glands. the hormones act like a chemical messenger   within human body. once produce by the glands they   travel through the blood stream and reach at specific or target tissue and organs   which result in control of our body function. the hormones are specific in their work and work on only the targeted tissue or organ   . with the of hormone endocrine system regulate the heart rate , metabolism, our mood and   growth as well as the development and even the sleeping cycle etc. they actually are the messenger for body cell and organs .