Question

if wingtips are squared, then the speed of plane will increase. in this hypothesis, the speed is the ____________.
dependent variable
control variable
independent variable
changeable variable

Explanation:

In an experiment, the dependent variable is what is being measured and is affected by the independent variable. Here, the speed of the plane depends on the shape of wing - tips (squared or not), so it is the dependent variable.

Answer:

A. Dependent variable