What is the first step to add an error alert in data validation for a GPA requirement?

Adding an error alert in data validation for a GPA requirement starts with accessing the Data Validation feature, which allows you to control the type of data entered into a cell. The first step, therefore, is to click the Data Validation button. This action opens the Data Validation dialog, where you can define the criteria that must be met, as well as specify the error alerts that will appear if the data does not conform to those criteria.

The other choices do not lead to the setup of data validation. The Quick Access Toolbar is a customizable toolbar that provides quick access to commonly used commands, but it does not involve data validation directly. The Insert Function dialog is focused on inserting functions into cells and has no relation to data validation. The Goal Seek button is a tool used for performing what-if analysis and does not apply to setting up data validation or error alerts. Therefore, clicking the Data Validation button is indeed the correct first step in this process.