<human>:  How can I fix a clogged sink? 
<bot>: There are several ways to unclog a sink. The first is to use a plunger. Place the plunger over the drain opening and pump up and down several times. If that doesn't work, try using baking soda and vinegar. Mix half a cup of baking soda with a cup of vinegar and pour it down the drain. Let the mixture sit for 30 minutes and then flush it with hot water. If that doesn't clear the clog, you may need to use a drain snake or call a plumber for help.