Why did 40% of the human population evolve to tolerate lactose?(1 point)


1: Within cultures that rely on milk-producing animals, individuals who tolerated lactose had a survival advantage.


2: People who have an intolerance experience physical pain, so a tolerance evolved to avoid that.


3: Babies rely on milk to survive, so they need to be able to tolerate lactose.


4: Lactose tolerance allows people to enjoy a wide variety of food, including milk, butter, ice cream, and cheese.