Re: How to delegate/assign a task politely?
Rover, did you mean to say that none sound unnatural? I find them all okay except the last one, which sounds a bit odd.
The one that's different is the one that says "assist." The person who gets that might not know that it's up to them take care of it, and just wait for somoene else to ask.
My intern is back for the holidays. I routinely send her stuff that says "Can you take care of this for X, please?"
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.