Jane can still pump air in the party balloon even though it is already inflated. What explains this phenomenon?
*
1 point
a. balloons look better if its size is bigger
b. balloons are made up of plastic
c. the air inside the balloon is hot
d. air molecules can be compressed
d. air molecules can be compressed
Even though the balloon is already inflated, there is still room for the air molecules inside the balloon to be compressed further, allowing for more air to be pumped in.