Predicament #12

Darkness is coming quickly. Your flashlight glows dimly as you are making your way back to your campsite. You know the flashlight doesn’t have much juice left. You should 

A. Walk fast, keeping the light on, hoping it will glow enough for you to make out landmarks

B. Put the batteries under your armpits to warm them and then put them back in the flashlight

C. Shine your light for a few seconds, try to get the scene in mind, move out in the darkness. Repeat the process.