What is an advantage and disadvantage to using color to identify a mineral

Answer;

Advantage- it's easily observed;

Disadvantage- many minerals come in a variety of colors, so few can be identified by color alone.

Explanation;

-Using color alone to identify a mineral could lead to an inaccurate conclusion. The hardness of the mineral, luster, cleavage, fracture, how it reacts to an acid, and other traits can be used to identify what the mineral is.

d i think its   answer d

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus