What the frequency for 1,2,3,4,3,1,1,5,4,1

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted

Can someone answer all these questions i need it done by tonight. once again

In plate tectonics, why is the north american plate tectonically inactive?