Suppose galaxies in the image are moving, and the directions indicated by the area of what would have been true at some point in the past

Question

A.) the galaxies were closer together
B.) the galaxies were moving in the same direction
C.) the galaxies, removing with the same velocity
D.) the galaxies all had the same mass

Answer 1

Based on your description of the motion of galaxies and their historical positions, the most appropriate answer would be:

A.) the galaxies were closer together.

This conclusion follows from the understanding of cosmic expansion; if galaxies were once closer together, their historical positions and the directions of their motion would reflect that initial proximity before moving apart over time. The other options, while potentially applicable in specific contexts, do not directly relate to the idea of galaxies' positions and movements over time.