Final answer:
What-if analysis tools are features in spreadsheet programs like Excel or Sheets that let users change values to view potential outcomes. The correct answer is 2.
Step-by-step explanation:
The term for the tools that allow users to change specific values in a spreadsheet to see the effects of those changes is What-if analysis tools. These tools are provided by most spreadsheet programs such as Microsoft Excel or Sheets, which are widely used by geoscientists and in business to analyze numerical data.
What-if analysis, also known as scenario analysis, helps analyze how different values of an input can impact the output under certain specific conditions. This is an invaluable feature for business decision-making, such as cost/benefit analysis, and scientific data analysis, including creating graphs, calculating the best-fit line, or managing contingency tables. Therefore the correct option is 2.