Which of the following is the least risky? collectables stock savings bond savings account

i think its saving account...because a savings bond is are debt securities issued by the U.S. Department of the Treasury to help pay for the U.S. government's borrowing needs, collectibles are A collectible is an item that is worth far more than it was originally sold, and stock (if its a company)If the company goes bankrupt, then you simply lose those shares (or the shares crash in price). You can be in debt (owe money).  

If this isn't the answer i do apologize

answer; manager working long hours; plz check i believe this is correct good luck;