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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1. Wash your hands constantly - prevents spread of germs.
2. Clean the table - limits germs on tables.
Answer:
D. all of the above
Explanation:
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