At what age is a human male brain fully developed?

  • 25 correct

    It takes a quarter of century for the male brain to fully develop so lay off your son a bit for forgetting to take out the trash. A female's brain is fully developed by the age of 21 which means that it will take a full four years for him to fully understand what the heck you're talking about.

  • 21
  • 18
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