The correct answer for this question is this one: market and demand. If the raw market cost for producing a particular good is lower for one producer than another the former producer has demand for producing the good. Hope this helps you answer your question.
Answer: B. Increased human capital increases productivity.
Explanation:
More educated women in developing countries means that they can get better opportunities like a high-skill job or start a business. Options A) and C) are true but not directly related to the question.