system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Appearance of Breast bud is known as: March 2013
assistant
The correct answer is  Ans. B i.e. Thelarche Thelarche is the onset of secondary (postnatal) breast development, usually occurring at the beginning of pubey in girls.