Why can't we see past the cosmological horizon?

Question

Quizplus · Accepted Answer

The cosmological horizon is the distance beyond which light has not had enough time to reach us since the universe began. Therefore, if we were to look beyond this horizon, we would be seeing events that occurred before the universe was born, which is impossible.

Answer: D
 The cosmological horizon defines the boundary of the observable universe, beyond which galaxies are moving away from us so rapidly that their light can never reach us. Therefore, every galaxy in the entire universe, including the ones that we cannot observe, exists within the cosmological horizon. Hence, there is nothing to see beyond it.

Note: B and C are incorrect as they do not explain the concept of the cosmological horizon.

Why Can't We See Past the Cosmological Horizon