Choose the word opposite in meaning to-
Competition
a) Rivalry
b) Compromise
c) Monopoly
d) Contest

Hint: The dictionary meaning of the given word ‘competition' is ‘striving to establish superiority'. For example : The painting competition.

Complete answer:
The given word ‘competition' is a noun. It means the activity or condition of striving to gain or when something by defeating or establishing superiority over others. For example, There is fierce competition between banks.
Now, let us examine all the given options to find out the correct answer -
Option ‘a’ is Rivalry. It is a noun that means the competition of the same objective or superiority in the same field. For example Silent rivalry between the racers.
Option ‘b’ is Compromise. It is a noun that means an agreement or settlement of a dispute that is reached by each side by making concessions.
Option ‘c’ is Monopoly. A market structure characterized by a single seller, selling a unique product in the market. In a monopoly market, the seller faces no competition, as he is the sole seller of goods with no close substitute.
Option ‘d’ is Contest. A contest is a noun which means the event in which people compete for supremacy, in a sport or other activity.
As we have analyzed all the given options we can easily figure out the correct option. Here, the opposite of the word ‘competition’ is ‘compromise’. Hence, option ‘b’ is the correct option.

Note:
Don’t confuse between ‘rivalry’ and ‘compromise'. In a rivalry, you may not get a winning prize, but in a contest you do. Also, you are asked for an antonym and not a synonym.