Answer the question

A student plans to design a new toothpaste tube that will give the same amount of toothpaste every time it is squeezed. Which should the student do first when designing the new tube?
Pick your answer from:
(1). make a data table of amounts of toothpaste
(2). gather building materials
(3). create models of old toothpaste tubes
(4). draw a few possible solutions
(4).