Where can you find the most comets? A. In Earth’s atmosphere

B. Between Mars and Jupiter

C. From the Oort Cloud or Kuiper Belt

D. Flying around in space

Oort Cloud  ( if it is wrong then I am sorry)

Explanation:

Comets orbit the sun, but most are believed to inhabit in an area known as the Oort Cloud, far beyond the orbit of Pluto. Occasionally a comet streaks through the inner solar system; some do so regularly, some only once every few centuries.