Answer:
The answer is option B) Three major airlines meet to discuss pricing strategy and as a result prices for airplane tickets rise.
Step-by-step explanation:
Collusion is a non-competitive, secret, and sometimes illegal agreement between rivals which attempts to disrupt the market's equilibrium.
The act of collusion involves people or companies which would typically compete against one another, but who conspire to work together to gain an unfair market advantage.
Major airlines are usually competing among each other to get more patronage. Some may use cheaper fares to their advantage but Collusion takes place when they meet and agree to increase prices of air fare on all fronts.