Why will it not accept my answer for CRUD? I have typed Create Read Update Delete in every case, with and without commas

Those are the right answers.

Try typing the first answer in the first blank in then hitting tab to move to the next field.

I just took the quiz and entered: Create Read Update Delete (in that order).

There are four boxes to fill in for this question which are separated by a comma (so you don't have to add that yourself). As long as you don't put multiple definitions in the same box the answer should be accepted. The case of the words doesn't matter.

I just tried it with both lower and upper case and both were accepted without issue.

That is probably it. On my screen it looked like a single text field. I'll try tabbing over. Thank you!