Score: a white dwarf is a small star before it enters the main sequence stage the stage after a red giant finishes nuclear fusion a star that is about to become a black hole a small black hole

A white dwarf is after a red giant finishes nuclear fusion. The correct option among all the options that are given in the question is the second option. The mass of the white dwarf is far greater than its actual size. This is the specialty of the white dwarfs. I hope the answer helps you.

a remnant star

Explanation:

The white is formed from the carbon fusion of the rec star after which id reduced to a small star of low mass goes to the main sequence stage where the red giant finishes and the collapse of mass to form the remans star that is half mass of the sun.  Chiefly composed of helium, and in the end when the star reaches its Chandrasekhar limit the degeneracy pressure fals and collapses into the cold and dark small black hole.

Its in the national history museum and you can't se the original because its locked away in a vault 

Amath expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).example :   8+b8+b  or  a−3a−3in algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.example 1:   x=4+2x=4+2  , [here, we can observe that the variable is present only on one side of the equation].example 2:   2x+3=x+42x+3=x+4  , [here, we can observe that the variables are present on both side of the equation].