Answer: B. Make sure businesses do not harm citizens
For example, the government puts in food safety standards to make sure that food companies do not sell spoiled products. Otherwise, people would likely get sick from eating those products. This is why choice B is the answer.
Choice A is false because regulations cost money to the government (since it costs money to hire government workers to enforce the regulations), which means reducing taxes only leads to less regulations. This is only if the government can't make up the revenue in some way.
Choice C is false since the government doesn't control the price of goods. That's left to the free market to figure out. I'm assuming you're referring to the US, but many other countries do this as well. Also in the US, there's the federal reserve which does try to control inflation. However they don't control the price of goods.
Choice D is false. Regulation doesn't build out infrastructure, but safety regulations are needed to ensure that infrastructure is safe for use. For example, guard rails on the road are one safety feature
