Which of the following indicates that the universe is expanding?

Question 21 options:

The spectra of Cepheid variables, which are found only in our galaxy, are red shifted.

The spectra of Cepheid variables, which are found in all galaxies, are red shifted.

HELP!!! The spectra of Cepheid variables, which are found only in our galaxy, are blue shifted.

The spectra of Cepheid variables, which are found in all galaxies, are blue shifted.

the second one

Explanation:

The spectra of Cepheid variables, which are found in all galaxies, are red shifted.

i'm gonna put a couple so you can chose from

explanation:

if you know the fur color of the offspring mice, you can use the ratios to identify the genotypes of the parents.

if either parent mouse passes a dominant allele, the offspring will have black fur.

if the parental mice has two different fur color (i.e white and black) , the color of the offspring's fur would be either black, white, or the combination of both (grey)

hope this : )