Please choose the correct ending to complete the given sentence: Health: [header] How to stay away from germs [title] Keep hand sanitizer in your purse, your pocket, etc. [step] As much as possible. If you need to touch something you don't feel comfortable with, sanitize your hands afterwards [title] Shake hands only when absolutely necessary to be polite.

Ending1: [step] Hands are one of the dirtiest areas on the body. Especially avoid shaking hands with someone who appears sick (coughing, sneezing, wheezing, etc). Ending2: [step] Always shake hands at least once with strangers. This could be when you're in the middle of a conversation, when a date is approaching, or when running into someone standing in front of you. Ending3: [step] Hand sanitizers might sound odd, but they are actually quite safe and nothing else. Do not touch purses unless it is absolutely necessary to make an effort. Ending4: [step] The body's immune system is weak enough without any technology as effective at keeping germs from popping up. [substeps] Shaking hands is the only thing that's important while outside and in a public place.

Answer format: ending1/ending2/ending3/ending4