Many markets can be considered monopolistically competitive, often including the markets for restaurants, cereal, retail, shoes, beverage, and service industries in large cities. however, sometimes it is difficult to distinguish a firm operating in a monopolistic competition industry to one operating within an oligopoly. how can you distinguish between the two market structures?

The correct answer is "a.grassroots movements".

Answera type of question that is legally permissible in a job interview because it focuses on job related factors;

Part (a) is relatively straight forward.there are 4 aces in a standard 52-card deck. so the probability that an ace is picked is just 4/52.part (b): note that there are 4 suits in a standard 52-card deck. so picking hearts will be 13/52 or 1/4.part (c): the probability condition or means we need to add the two probabilities because we do not want them simultaneously. so, we end up getting pr(ace) + pr(heart).from part (a), we found that picking an ace had a probability of 4/52, which is reduced down to 1/13.from part (b), we found that picking a heart had a probability of 1/4.so, the probability of an ace or a heart is 1/13 + 1/4 = 4/52 + 13/52 = 17/52.