Anwar?s car has broken down and he is caught in a thunderstorm. He sees a
tree some distance away from the car. Would he be safer if he (a) stands
under the tree or (b) stays inside the car? Explain.

It is better to sit inside the car. The body of the car is metallic. It provides electrostatic shielding to the person in the car, because electric field inside the car is zero. The discharging due to lightning passes to the ground through the metallic body of the car.  On the contrary, the electric field under the tree is not zero due to which there is a chance that lightning can strike at the that place.

Hope this information will clear your doubts about the topic.