Refer to the outline below.

I. Cooking
A. Non-food items
1. Paper plates
2. Pots and pans
3. Cooking utensils
B. Food items
1. Water
II. Shelter
A. Tent
B. Sleeping bags
C. Lantern
III. Miscellaneous
A. Trash bags
B. Maps
C. Bug spray

What is the main topic of this outline?

Shelter

Paper plates

Camping trip

Cooking

The main topic of this outline is a camping trip.