If a leading canned soup company introduces dozens of new flavors in order to dominate shelf space, the company is most likely trying to create a barrier to entry by:

crowding out new entrants

Explanation:

Based on the information provided it can be said that in this scenario the company is trying to create a barrier to entry by crowding out new entrants. This is a technique in which a company introduces various variations of a product into the market so that consumers are more likely to buy one of their products instead of another company's similar product.