Which of the following is a spreadsheet application?

A spreadsheet application is software designed to organise data into rows and columns of cells, allowing calculations, formulas, and data analysis to be performed automatically. Microsoft Excel is the most widely used example of this category of software, built specifically for entering figures, applying formulas, and generating charts or summaries from tabular data, which is exactly what accounting and business record-keeping requires.

The other items serve entirely different purposes. The Internet is a global network for accessing and sharing information, not an application for organising figures. Windows is an operating system that manages the computer's hardware and runs other programs, including spreadsheet software, rather than being a spreadsheet itself. Word is a word-processing application, used to create and format text documents such as letters and reports, not to perform tabular calculations.

Examination reminder: when identifying software categories, focus on the primary function: word processors handle text, spreadsheets handle numerical/tabular data and calculations, and operating systems manage the computer as a whole.