Question

Which of the following characteristics of stars is affected by a star's temperature?

Brightness

Color

Distance from Earth

Size

Answer 1

I believe it is color and brightness.
The hottest stars are blue and the coolest are yellow.
The hotter it is the more energy produced. Thus, the more light and heat is given off. Note: The blue stars are the brightest but they might be farther off than the sun, so we don't notice it as much.

Answer 2

temperature will also affect the size of the star

Answer 3

Color --> Spectrum of light emitted, more towards bluish white region, the hotter, and cooler towards red.

Although brightness and size are affected as well, but color can be the the most justified explanation.