The correct answer is A) how much to charge.
The other options of the question were B) which services to buy. C) where to shop for goods D) Which goods interest them.
In a free enterprise system, producers decide how much to charge and what to produce.
A free-market system allows for the creation of many companies that can compete in the market for the loyalty of the consumers. The free enterprise system facilitates the creation of many companies dedicated to so many things, that can offer the best prices for their products to offer diversity to consumers. These companies decide what to produce and the better price for their products, so consumers buy their goods instead of the rival companies.