The answer is : variables
When viewing data entered into a spreadsheet, the columns identify Variable. The variables later can be used on a formula to help you process any sort of data that is implemented within excels' formula system
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Social media is so powerful in this generation because it is able to reach many different corners of the world. It is not only used merely for communication but also sometimes or most of the times for business. For Lindsay, the use of social media will allow her to increase the size of the customer base. The answer is letter A.