23. In terms of number of natural satellites, which is the correct order when ranked lowest to highest?
A. Mercury, Mars, Earth, Venus
C. Venus, Jupiter, Uranus, Mars
B. Mercury, Mars, Earth, Saturn
D. Venus, Earth, Neptune, Saturn
24. Which pair of planets have the shortest and longest day?
A. Mercury, Saturn
C. Uranus, Earth
B. Jupiter, Venus
D. Mars, Neptune​