Question

how often should the oil be changed on a boats engine?
a after every boating trip
b at least once a month
c at least once every boating season
d at least once every 3 to 5 years

Explanation:

Boat engine oil changes are typically recommended at least once per boating season. This helps maintain engine performance and longevity. Changing oil after every trip (A) is excessive. Monthly (B) is also more frequent than needed. Every 3 - 5 years (D) is too long as oil degrades over time with use.

Answer:

C. At least once every boating season