Which of the following file types can be used when uploading contacts into Qualtrics?

The option identified is correct because Qualtrics supports the upload of contact lists in .tsv (tab-separated values) format. This format is commonly used for handling data in various software applications due to its simplicity and compatibility with spreadsheet software like Excel. When users need to import contact information, .tsv allows for structured data entry, which is essential for organizing and managing participant information effectively in Qualtrics.

Other file types listed, such as .docx, .pptx, and .jpeg, do not cater to the structured data requirements needed for contact uploads. .docx (a document format) is intended for text documents, .pptx (a presentation format) is designed for slideshows, and .jpeg (an image format) is utilized for photographs. These formats lack the necessary structure to represent contact information in a way that Qualtrics can interpret and process for survey invitations and respondent tracking.