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.
Hope this helps! :)
Cecilia's is the healthiest because she is able to find a middle ground in a conflict and is reasonable in doing so. Also, she tries to find the root of the problem instead of just trying to get her way.
True, that's why its known as a ''complex trait'', which mean that is usually caused by a mutation in gene.
Older generations had more accurate health information, and people were more active.
Stereotypes are based on biological sex and how they identify themselves.