Answer:
The answer would be B, Competition with another person.
Step-by-step explanation:
Rivalry is the feeling of competition with another person. When a person compares himself with another person in any aspect like education, job, house, car, money, clothes, shoes, way of talking, success, lifestyle, anything; he is trying to compete with that person basically. This feeling of competition with that person is called Rivalry.
Rivalry is often seen with the people at jobs. Big companies that are in the same industry are usually considered to be the Rivals of each other because those companies are competing with each other in the same industry.