Interpret the meaning of the bold idiom in the following sentence. "Naturally it worries me. I cannot make head or tail of it."

He doesn't know the head from the tail.
He isn't sure how to make it.
He can't make sense of it.
He has no interest in making sense of it.
He understands completely.

Which is one of the reasons that swift gives for his proposal? a.) the threat of harvesting babies would engourage stronger discipline among the young b.) thereis a famine inthe land, nd the children are plentiful c.) the meat of the irish infandts goes well with many dofferent vegetables d.) children would become valuable property