To determine the type of file attached to Hazel's email, you would need to look at the file extension or format. Common file types for invitation lists might include:
- .txt - a plain text file
- .csv - a comma-separated values file, often used for spreadsheets
- .xls or .xlsx - Microsoft Excel spreadsheet files
- .doc or .docx - Microsoft Word document files
- .pdf - a portable document format file, which can preserve formatting
Checking the file name at the end or the type of file described (like whether it's a spreadsheet, document, etc.) will provide information on the type of file it is.