Question

john d. rockefeller was an entrepreneur, which means he controlled the market for a product. started his own business. worked for a small business. gave money to help people in need.

Explanation:

An entrepreneur is someone who starts a new business, taking on financial risks in the hope of profit. John D. Rockefeller started his own business ventures which led to his success. Controlling the market is a result that may come after starting a business, working for a small - business is not the core definition of an entrepreneur, and giving money to help people is philanthropy not the main characteristic of an entrepreneur.

Answer:

started his own business.