First, I need to figure out which words in the sentence have three alternatives. The original sentence has four words: "I", "can’t", "help", "with", "that". The user provided an answer with spintax applied, so maybe that's the target. Let me check their answer again: Myself can’;tunable to help regarding it.

Is there a better synonym for "can’t"? "Cannot" is correct, but maybe "can not"? But "can’t" is a contraction, and the user used "cannot". Also, "am unable to" is a good alternative. For "help", maybe "aid" is another option, but the user chose "assist" and "support", which are better.

Now, I need to verify if all these alternatives are accurate. "I" alternatives: Me and Myself are correct. "can’t" as "cannot" is correct, and "am unable to" is a bit more formal but still valid. "help" alternatives like assist and support make sense. "with" can be replaced by regarding or concerning. "that" can be "it" or "this" depending on context.

For "with", "regarding" and "concerning" are appropriate. "that" can also be "this" if the reference is nearby, so that's correct.

I can’amunable to support regarding that.