Workers at local nonprofit organizations would be the best people to approach to gain knowledge about the career.
A charitable organization is a type of non-profit organization (NPO). It differs from other types of NPOs in that it centers on philanthropic goals as well as social well-being (e.g. charitable, educational, religious, or other activities serving the public interest or common good).
The correct answer between all the choices given is the third choice or letter C. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.