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
Peak growth velocity in adolescent girl is indicated by –
assistant
The correct answer is  Mensus typically appears around the peak in height velocity -Nelson
Menarche usually occurs after peak velocity has been attained and as the growth rate begins to decline.
Remember:

Growth acceleration begins in early adolescence, but peak growth velocities are not reached until middle adolescence.