question_answer 46)

  In human females, an event that reflects onset of reproductive phase is (a) growth of body                                                          (b) changes in hair pattern (c) change in voice                                                           (d) menstruation

Answer:

                  (d) In early teenage girls should, breast size increased, with darkening of the skin of nipples at the tip of breasts. Also, girls begin to menstruate at around this time. Inhuman females, this reflects onset of reproductive phase.