Answer:
B. increased choices.
Explanation:
When alliances or monopolies are formed, it leads to the creation of only one firm in the industry.
When there's only one firm operating in am industry, the choices available to consumers reduce.
Also, monopoly firms are price setters, therefore, without government regulation, they can set their prices relatively high.
Laws prohibiting formation of monopolies or alliances increases choices available to consumers and protect from high prices.
I hope my answer helps you
