Is it used correctly in this example? You are the person responsible for. Which alone could indicate several choices from the set of alterates could be selected in various.
He is one of the soldiers who fight for their country. The present tense i am the one refers to the current state of affairs. I drew the shorter straw, so i was the one who collected the money.
I want to know what the constraints are on using the phrase one of the. The one could imply that of the alternates only one choice is possible, or permitted.