Question

describing characteristics of stars
complete the paragraph to describe the characteristics of the sun and rigel, a blue - white supergiant.
rigel and the sun have similar characteristics, but they also differ in some ways. rigel and the sun are spheres of gas that use nuclear fusion to produce energy. rigel is bigger than the sun. rigel has
a higher temperature than
a lower temperature than
the same temperature as
the sun. rigel has a surface temperature of about dropdown.

Explanation:

Rigel is a blue - white supergiant, and the Sun is a yellow dwarf. Supergiants are larger than dwarfs, so Rigel is bigger than the Sun. Blue - white stars have higher surface temperatures than yellow (Sun) stars, so Rigel has a higher temperature than the Sun. For the surface temperature, Rigel's surface temperature is about 11,000 - 30,000 K (common values for blue - white supergiants, while the Sun's is about 5,778 K).

Answer:

First dropdown (temperature comparison): a higher temperature than
Second part (size comparison is already "bigger than" as given)
For the surface temperature dropdown (assuming common options like 10,000 K, 20,000 K etc., typical Rigel temp is around 11,000 - 30,000 K, so an option like 12,000 K or similar would be correct. If options include values, a value like 12,000 K (or within the blue - white supergiant temp range) is appropriate.