A teacher opens a can of food in the front of a classroom. Soon, all of the students in the classroom can smell the food. Which statement identifies a property of a gas that allows all of the students to smell the food?

Pick the answer from these options

(1). A gas has no mass.
(2). A gas has a large mass.
(3). A gas takes the shape of its container.
(4). A gas keeps its shape when placed in a container.
(3).