Does Hubble's law work well for galaxies in the Local Group? Why or why not?
A) Yes, it works so well that we have never detected any measurable deviations from its predictions.
B) No, because galaxies in the Local Group are gravitationally bound together.
C) No, because we do not know the precise value of Hubble's constant.
D) No, because Hubble did not know the Local Group existed when he discovered his law.
B
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