All of them are correct.
THE EXPERT VERIFIED ONE IS WRONG
Lower prices for goods and services. Prices will lower naturally since businesses are competing for more consumers. Consumers typically purchase the product with the lowest price
Better quality of goods and services. Businesses are competing for more consumers. Some products that have a long term use need to be better quality. Most consumers will buy a higher quality phone over a lower quality one,
I cant be bothered to explain the rest since the other answer explains them