One of the trade-offs tesla faces is between safety and the maximum range someone can drive an all-electric car before having to recharge it. for example, adding steel to a car makes it safer but also heavier, which results in fewer mileage between recharges.

The question is incomplete, you are asked to draw a production possibles frontier between safety and range and explain how it works.

I drew a bounded out curve, where you can maximize safety but at the same time you minimize range, or the opposite. If you are located in a point of the curve, lets say point 0, and wish to gain range and move to point 1, you will lose safety. If you want to increase safety and move to point 2, you will lose range.

answerup to (3) three years;