Rise and removing "take it again" option on Knowledge Check

I just had a client ask me to not display the take again button when someone has answered the question correctly. Who would take the quiz again if they got it right? I would not call this a feature request - it's a design flaw.

Another design flaw that needs to be fixed: in the multi-select question response, options that should be correct are indicated with a check and options that should not be selected are indicated with a x. At first glance, it looks like the checks and x's are an evaluation of the input. If a user has answered a multi select correctly, all they should see are checkmarks, and the options they correctly did not select should be blank. All 5 independent reviewers of my project got confused by the mixed message. There should be no x's except to say you made an incorrect choice.