The correct answer is A) increase.
Fifty new food business have entered the food market. The supply of food at each price level will increase.
If that many numbers of food companies are entering the market, it means the there is going to be more products to be offered to the consumer. People are going to have so many options to choose and the market will have more competition for goods. So if fifty new food business have entered the food market, then the supply of food at each price level will increase.
