A.: There are three likely explanations, based on recent research.

For these results selection is by far the most likely explanation.

This seemed a likely explanation, though not a very good one.

Cultural differences are a much more likely explanation, she said.

This is the most likely explanation for the name of the town.

When she turned out to be on leave, that seemed the most likely explanation.

Seeking some attention seems to be the most likely explanation.

I'd say the most likely explanation is that it's her own writing.

On the right you see what I think is a far more likely explanation of the same facts.

Despite the likely explanations, his hair was trying to stand on end.