Can someone help me please? :/ Regular eclipses of the Sun and the Moon are best explained by which of the following?

1: The movement of Earth and the Moon around the Sun

2: The relative masses of the Sun, Earth, and the Moon

3: The different compositions of the Sun and the Moon

4: The rotation of Earth and the Moon on their axes

This is a form of winter precipitation. it is frozen precipitation falling as ice pellets. snowflakes melt into raindrops as they pass through a thin layer of warmer air. the raindrops then refreeze into particles of ice when they fall into a layer of sub-freezing air near the surface of the earth. this precipitation is called a) hail. b) rain. c) sleet. d) snow.