<prompt> Testicular volume at pre-pubeal age is?5 ml10 ml20 ml20 ml  <response>: 5 ml REF: Grays anatomy, 39th edition, page 1395The earliest sign of pubey in boys is the growth of the testes and scrotum. The volume of the testes may be estimated - the average adult volume is 20 ml - and a volume of 6 ml indicates that pubey has staed. 5m1 is the closest possible answer 