SOLAR SYSTEM

Detailed explanation-1: -Comets come from a region of icy bodies beyond the orbit of Neptune called the Kuiper Belt. These short-period comets are fairly predictable because they take less than 200 years to orbit the sun. Some less predictable comets arrive from a distant region called the Oort cloud.

Detailed explanation-2: -Halley found the similarities in the orbits of bright comets reported in 1531, 1607, and 1682 and he suggested that the trio was actually a single comet making return trips. Halley correctly predicted the comet would return in 1758.

Detailed explanation-3: -The correct statement about comets is: C. Comets are mostly made up of dust particles, frozen water and frozen gases. They are usually very hard to see, but as they approach the Sun these particles heat up and become much easier to see.