If Earth's crust solidified but enough depressions or low areas did not form what problem would arise in ocean formation?

Correct answer: Space for large water accumulation would be limited

Direct answer: Option A, space for large water accumulation would be limited. Ocean formation requires not only water but also broad low-lying basins where that water can collect and remain. Reasoning: the early Earth cooled and a solid crust formed; water vapour condensed into liquid water; gravity moved water toward lower areas; depressions became ocean basins. If the crust had no sufficient depressions or low regions, water would have had less room to gather in large, deep, connected bodies, so ocean formation would be restricted. Option A states exactly this. Option B is wrong because a strong first atmosphere is not the direct result of missing depressions. Option C is wrong because ozone breakdown is a different atmospheric issue and would not immediately follow. Option D is wrong because human beings appeared much later and is unrelated to ocean basins. Memory cue: water plus basin equals ocean.