The rate of psychological problems is...

Question

Hello,

I am having a hard time understanding this question. The question stem asks " the assertion that children of divorced parents have a higher rate of psychological problems than other children figures in the argument in which one of the following ways? The answer choice that I had picked was (B): it is a claim that the argument tries to refute. The correct answer choice was E; it is cited an an established finding for which the argument proposes an explanation. So here was my thought process on B: the second premise states that " but it would be a mistake to conclude that these problems are caused by the difficulty the children have adjusting to divorce. So the terms "rate" and "likelihood" refer to statistics correct? Any suggestions?

Any help will be apprecited.

I didn't find the right solution from the Internet.

References:

https://forum.powerscore.com/lsat/viewtopic.php?t=8682

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Thank you.