Which of the following is classified as a symptom of precocious puberty?

In the context of precocious puberty, all the listed changes can indeed be considered symptoms. Precocious puberty is defined as the onset of secondary sexual characteristics before age 9 in boys and before age 8 in girls.

Increased growth in height is common in precocious puberty due to the early release of sex hormones, which stimulate growth. However, this is typically followed by an early closure of growth plates, which can potentially lead to a shorter adult height if this early puberty is not managed appropriately.

The development of breast tissue, known as thelarche, is a specific sign that occurs during the onset of puberty in females, indicating that the body's endocrine system is initiating the sexual maturation process earlier than usual.

Inhibition of growth plates also relates to the influence of sex hormones on bone maturation and growth. When puberty starts too early, the growth plates may fuse prematurely, which impacts overall height potential.

Considering all of these factors, it becomes clear that each symptom distinctly represents an aspect of precocious puberty, hence the conclusion that all the given symptoms are collectively classified under this condition.