Question

question 7 (1 point)
listen
__________ provides evidence that the universe is expanding, since more distant galaxies appear red in color.
greenshift
pinkshift
blueshift
redshift

Explanation:

In astronomy, redshift occurs when light from a distant object (like a galaxy) has its wavelength stretched as the universe expands. This stretching makes the light appear more red. Blueshift is the opposite (wavelengths compressed, light appears more blue, usually when objects are moving towards each other). Greenshift and pinkshift are not standard terms in this cosmological context.

Answer:

Redshift