Answer:
b. Its core capability is easily imitated
Step-by-step explanation:
In Business management, a strategy can be defined as a set of guiding principles, actions and decisions that an organization combines so as to achieve its business goals, attract customers and possess a competitive advantage over its rivals in the industry.
In this scenario, Groupon offers online coupons for bargains at local shops and restaurants. A reason that rivals are limiting its growth is simply because its core capability is easily imitated i.e offering of coupons for bargains.
Comparative advantage in economics is the ability of an individual or country to produce a specific good or service at a lower opportunity cost better than another individual or country.
The comparative advantage gives a country a stronger sales margin than their competitors as they are able to sell their specific products or render their peculiar services at a lower opportunity cost.