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Sadie and her team are trying to design a mini self-driving car for the science fair. They thought everything was in place, but the car turns itself off after 60 seconds. The team is at a loss as to why this happens. Which would be the BEST way for Sadie and her team members to go about identifying the problem?

A.
Ask someone who is on another team to take a look at their car.

B.
Make every person explain what they did to see who caused this.

C.
Create a chain diagram showing each event that happens.

D.
Destroy the car and begin again to make sure the problem is gone.