Here's a question: John wanted to keep his food fresh, she he bought something that would let him suck the air it, leaving empty space inside.   This would keep food fresh.  This item was a type of what?

Here are possible answers to this question:
- front
- jar
- baggie
- box
- universe

I believe the correct choice is "jar", here's why:


keeping the food fresh is possible if it is placed in a closed jar