Given below is the spreadsheet model for an automobile rental.To better understand and mitigate the inherent risk existing in the model,identify the uncertain variable to which assumptions can be defined using Crystal Ball.

Uncertain Variable

A variable with ambiguous or unknown values, often used in contexts requiring decision-making under uncertainty.

Crystal Ball

A forecasting and simulation software tool used for predicting and analyzing future scenarios in business and finance.

Automobile Rental

The service of renting cars for short periods of time, often ranging from a few hours to a few weeks, typically organized with multiple local branches.