Final answer:
A .pdf file is not used for sharing spreadsheet data, unlike .xlsx (Excel Spreadsheet), .csv (Comma-Separated Values), and sometimes .txt, which can represent spreadsheets when formatted correctly.
Step-by-step explanation:
The file type that does not share information in a spreadsheet format is c) .pdf.
File types used for spreadsheets include .xlsx, which is an Excel Spreadsheet file, and .csv , which stands for Comma-Separated Values and is a plain text file that contains a list of data. The .txt file format can also contain data that can be interpreted as a spreadsheet when organized properly, although it is a plain text file without any formatting or formulas.
On the other hand, a .pdf file, which stands for Portable Document Format, is used to display documents in an electronic form independent of the software, hardware, or operating system they are viewed on. It is not primarily used for creating or sharing spreadsheets and data may not be easily extracted or manipulated like in spreadsheet software.