Answer: The correct answer is a change in hormones.
Explanation:
Nurses routine provide patient education to patients regarding common manifestations of disease or health situations. Nurses are the eyes and ears of the physician who are responsible for a much larger number of patients. The other answer provided is beyond absurd and likely written by a HS student without an ounce of real life experience.
Girls usually begin puberty between the ages of 8 and 13 years old. The earliest sign of puberty in most girls is the development of breast "buds," nickel-sized bumps under the nipple.