question 2 which of the following sequences of spectral classes represe…

question 2
which of the following sequences of spectral classes represents the coolest to hottest stars?
obafgkm
omkgfba
abfgkmo
egbdfac
mkgfabo

Brief Explanations

The spectral class sequence from coolest to hottest stars is M, K, G, F, A, B, O. This is a standard classification in astronomy.

MKG FABO