What do we need batteries for?
The flashlight
What is this and why do we need it?
Food. So that we don't get hungry.
What is this?
Jacket
What are these and do we need them?
Soap and shampoo. Soap, yes. Shampoo, maybe (depends how long you go for)
What is this and why do we need it for our trip?
Money. Food/petrol/accommodation/water etc
What is this?
Tent
What is this and do we need it for our trip?
Mobile phone. Yes, for GPS or to call someone in an emergency.
What is this and do we need it for our trip?
Candy. No, we don't need it.
What is this?
Bottled water
What is this?
Candle
Why do we need a sleeping bag?
To keep us warm and comfortable
What is this?
Flashlight
What are these and do we need it for our trip?
Comic books. No, we don't need them. we may WANT them.
What is this and why may we need it?
Toilet paper. In case there is no water to clean ourselves or things.
What is this?
pillow
What is this and why is it important for the trip?
First aid kit. It will help us in case we get injured.