Which statement best explains why Io experiences more eclipses per month than Callisto?

Io orbits Jupiter much faster than Callisto, so it completes more orbits in a given month. Each orbit gives Io more opportunities to pass through Jupiter’s shadow and experience an eclipse. Thus, “Io has a shorter orbital period, so it passes through Jupiter’s shadow more frequently” is the best explanation.

AI-written and checked against the verified answer.