Please choose the correct ending to complete the given sentence: Youth: [header] How to make money at age 13 [title] Take surveys. [step] You can earn money or gift cards by taking surveys on websites such as swagbucks.com. Other sites, such as pinecone research, surveyspot, and toluna will also pay you to take surveys.

Ending1: By taking surveys, you can earn money if you receive better grades than your competition. You can compare different sites that offer this service. Ending2: In some cases, you will earn points for taking surveys. Once you have earned a certain amount of points, you can then cash them in for money. Ending3: Most of these sites have cards, so you wouldn't have to worry about buying them. [title] Think of last time doing it before doing it again. Ending4: The information offered on these sites is often extensive. [substeps] Many surveys are based on data you are learning or studies you want to learn more about.

Answer format: ending1/ending2/ending3/ending4