Perhaps more important would be if the OP did what AB asks and gave full name of quiz and closing date! Mind you, so many don’t bother and nothing is ever done about it.
There was a discussion some while ago about giving answers when the setter requests hints only. The Ed advised that if a question was asked it should be answered.
This thread has nothing to do with the setter requesting hints only. It does not say that on this quiz. Can you post the link to that please as it appears the Ed is saying ignore anything a quiz setter asks.
Just before I bow out of this and get back to my Sunday, I will say I have seen an Editor say 'can' be answered in the past, but have never seen the order 'should' be answered.
Apologies to OP for my part in cluttering up your thread.
My vote goes to eiderdown
ducks and drakes used - they are made from goose feathers
Eder down - dam busted
Silent letter strictly is the i
And however you want it to be so one of the Ms in skimmers is not what a silent letter is.