Use the drop-down menus to indicate the stage of technological design in which each action would occur. Establish criteria and prepare the initial design.

Redesign and retest as necessary.

Define a need and research related information.

Build and test a prototype.

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline. which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used