How often does a 'one-off' event occur in major sport events?

• A. Every year
• B. Daily
• C. Once every four years
• D. Every decade

Answer: (C)

The key idea is the scheduling cadence of major multi-sport events. A large event that is described as a one-off in this context is not held every year or more often; it follows a longer cycle because of the heavy planning, qualification, and hosting logistics involved. The Olympics are the classic example, occurring every four years (with Summer and Winter events alternating on a four-year rhythm). This four-year cycle gives nations time to train, qualify athletes, and prepare venues and ceremonies, while keeping the event special.

So the best answer is once every four years. Daily or yearly frequencies would be impractical for events of this scale, and every decade would be far too infrequent to maintain the momentum and global participation seen in major competitions.