Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to pack a light backpack for backpacking [title] Try out a smaller backpack. [step] Backpacks of a smaller size force you to leave more at home. Some come with less excess material, such as belts, pockets, padding, and a weight-distribution frame.

Ending1: The heavier the bag, the heavier the weight it will require to fill it up. Basically, you'll have to go through a variety of packing forces until you find a backpack that will effectively last the trip. Ending2: Choose a pack that is an appropriate size for your trip. [substeps] Keep in mind, however, that larger packs, such as those with frames, might feel better to wear due to better weight balancing and more comfortable strap material. Ending3: Others allow you to pack lighter items efficiently, like clothes and bulky gear. [substeps] The larger your backpack is, the more compartments you will need. Ending4: One of the most basic is a baby-size backpack-though some have more size and deeper compartments, such as a diaper bag. [substeps] Make sure the backpack is smaller than your actual pack size; it will make packing a lot easier.

Answer format: ending1/ending2/ending3/ending4