Question

which property of a star is closely related to its temperature?
○ brightness
○ color
○ composition
○ size

Explanation:

Stars emit light as black bodies; their surface temperature directly correlates with their observed color. Hotter stars appear blue/white, while cooler stars are red/orange. Brightness depends on both temperature and distance/size, composition relates to chemical makeup, and size affects luminosity but not directly temperature.

Answer:

color