Secondary sex features are characteristics that develop during puberty. Using the process of elimination, options B and D are really primary gender characteristics. Also, option A has more to do with your genetics than your gender.
That leaves option C. Breasts. They are a secondary sex characteristic that develops during puberty.
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Answer:
The modification allows the stomach to churn, mix, and pummel the food, breaking it down to smaller fragments.
Explanation:
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