## **Core Concept**
Incremental or Historic budgeting is a traditional method of budgeting where the previous year's budget serves as the base for the current year's budget. This approach involves making adjustments to the previous year's budget to arrive at the current year's budget, often through incremental changes.

## **Why the Correct Answer is Right**
The correct answer, **D**, implies that Incremental or Historic budgeting is characterized by starting with the previous year's actual or budgeted expenditures and then adding or subtracting a certain amount to arrive at the new budget. This method is straightforward and easy to implement but may not encourage a thorough review of expenses or align with changing organizational priorities.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Without specific details on what Option A states, it's challenging to provide a direct refutation. However, if it suggests that Incremental or Historic budgeting involves a zero-based approach, it would be incorrect because Incremental or Historic budgeting relies on the previous year's budget.
- **Option B:** Similarly, if Option B proposes a method that doesn't involve incremental changes from a previous budget, it would not align with the definition of Incremental or Historic budgeting.
- **Option C:** If Option C implies a completely different budgeting method, such as zero-based budgeting, it would be incorrect in the context of Incremental or Historic budgeting.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that Incremental or Historic budgeting can lead to **budgetary slack** and may not optimize resource allocation since it doesn't require a justification of every expense from scratch. This method can be contrasted with zero-based budgeting, which starts from a "zero base" and requires every expense to be justified.

## **Correct Answer:** **D**.