The enlarged tank will be able to hold ____________ more than the original tank.

The correct choice indicates that the enlarged tank has a capacity that is double that of the original tank, meaning it can hold 100% more. This concept is commonly used in various engineering and waste management contexts, where understanding volume capacity is critical. When a tank is enlarged to hold 100% more capacity, it means that the new tank can store twice the volume of the initial tank, allowing for greater storage of sewage or treated water.

To give context, if the original tank had a capacity of, for example, 1,000 gallons, an enlarged tank that holds 100% more would hold 2,000 gallons. This is crucial for sewage treatment operations, as tanks must be sized appropriately to handle varying flows and prevent overflow during peak usage or storm events.