I think the answer to this question is two to three.
To be honest, I'm not that sure on which one it is, but given choices lead me to think is the nervous system, probably because that's the reason our bodies are functioning, and compared to all other systems, the brain and the nervous system are needed for survival, otherwise you wouldn't be living.
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! :)
Answer:
I participate in environmental projects in my area.
Explanation:
I participate in implementing many environmental projects such as building and maintaining home garden or conducting a war on waste campaign in my area in order to clean and beautify the environment. due to building and maintaining home gardens, the environment becomes very beautiful while on the other hand, participate in waste campaign makes the environment clean from all waste material.