Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to keep a cat safe outside [title] Put on a collar with identification. [step] One of the first steps you should take with a cat who's going outdoors is to make sure the cat has a collar with an id tag. The id tag should have information such as the cat's name and your phone number.

Ending1: While your cat is indoors, secure the broken two-way switches on one of the front and back doors so that the cat can't escape out again. [substeps] If you've got a broken two-way switch for the front door, check the owner's manual for an unlock code. Ending2: It's important to have regular identification. If the cat's a smoker, a regular collar can be helpful. Ending3: You should also consider a second tag with information that shows your cat is up to date on vaccinations, provided by your vet. [substeps] Breakaway collars are best because they keep your cat from getting hung up on things, which could strangle them. Ending4: [substeps] Good id tags are the ones you can buy and attach to any cat items or objects it touches. Never cat appropriate tags, bracelets, anklets, necklaces, headphones, or other electronic accessories can be bitten or swallowed and the cat can inhale.

Answer format: ending1/ending2/ending3/ending4