Answer:
The correct answer is letter "D": They help foreign producers gain a competitive advantage over domestic producers.
Explanation:
A subsidy is a benefit granted to an individual, a business or an institution, typically by the government. Subsidies are provided to promote a social good or economic policy. Generally, the government provides subsidies in the form of cash or tax breaks. Other forms of government subsidies include low-rate loans and rebates.
When subsidies are provided to businesses, the objective is to boost their competitive advantage over foreign competitors and not the other way around.