This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Development and Epidemiology, Subject name: Pediatrics
1st sign of puberty in males is - 
Select and explain. 
A. Increase testicular volume, B. Peak growth velocity', C. Penis enlargement, D. Increased pubic hair
A: Increase testicular volume
Answer: A: Increase testicular volume 
Explanation: Ans. is 'a' i.e., Increase testicular volume o In boys, the first visible sign of puberty and the hallmark of SMR 2 is testicular enlargement,o The sequence of development of secondary' sexual characteristic in hoys is -# Testicular enlargement - Penis enlargement - Pubic hair growth - Peak growth velocity - Axillary hair - facial hair.o In girls, the first visible sign of puberty is the appearance of breast buds (Thelarche), between 8-12 years of age.o In boys the first visible sign of puberty is testicular enlargement, beginning as early as 9 1/2 yr.