One way in which monopolistic competition differs from oligopoly is that
a. there are no barriers to entry in oligopolies.
b. in oligopoly markets there are only a few sellers.
c. all firms in an oligopoly eventually earn zero economic profits.
d. strategic interactions between firms are rare in oligopolies.

The correct answer is letter "B": in oligopoly markets there are only a few sellers.

Explanation:

Monopolistic competition exists in industries that have many firms offering similar products or services for example restaurants, supermarkets and clothing stores. In monopolistic competition those products or services are not perfect substitutes from one another. On the other hand, an oligopoly is when a market is controlled by a small group of two or more firms. Businesses in an oligopoly can agree in price collusion and create barriers to entry for new commerce.

answer; maintain a safe following distance;

the correct answer is - no.

winnipeg, canada, is not further away from the equator than moscow, russia, in fact moscow is the city that is further away from the equator. moscow is on a latitude of 55.7558° north, while winnipeg is on a latitude of 49.8951° north, thus putting moscow by 5.8607° further away from the equator than winnipeg is.