What would you do to photograph a frog in a low-light exhibit at the zoo? Select one:
a. Use your camera’s flash
b. Stand back from the glass
c. Increase the ISO setting
d. Ask the zookeeper to increase the light

Suppose that you are in a room with 3 doors and a crack in the ceiling for light. that is all. the doors each have a sign on them that says what there is behind them. door #1. a pool of corrosive acid. door #2. a crocodile that hasn't eaten in 8 months. door #3. a solar "oven". a giant lens that focuses all the sunlight at the entrance of the door. you must choose a door, which door do you choose?