What type of liquid will cause a penny, a nail, a paper clip and a sewing needle to rust the fastest?

i need liquid for them can u guys help meWhat type of liquid will cause a penny, a nail, a paper clip and a sewing needle to rust the fastest?
pennies (copper and zinc) don't rust. Is this a trick question, or do you mean oxidize instead of rust?What type of liquid will cause a penny, a nail, a paper clip and a sewing needle to rust the fastest?
concentrated sulfuric acid