Matter can exist in different phases or states. what are three common states of matter?
a.
metals, nonmetals, and metalloids
b.
solids, liquids, and gases
c.
atoms, elements, and compounds
d.
earth, air, and water

B the main types we see every day are solids for example a wall liquids like water and gases

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !

i believe it would be c: tons.