Ursa Major constellation is also known as the _____________.

The Ursa Major constellation is also known as the Great Bear. 
There are about 88 constellations that we have named according to an imaginary figure. Some of the most commonly known constellations are
●       Ursa Major, also known as the Great Bear or Saptarishi
●       Ursa Minor, also known as the Little Bear or Laghu Saptarishi
●       Leo, also known as the Lion or Simha
●       Orion, also known as Mirga
●       Aquarius, also known as Dhanishta

Hence, option "the great bear" is correct.