Budgets Enable Comprehensive Business Planning and Control

Steps:

• Identify common purposes of budgets: planning future activities, setting performance targets, and monitoring actual results against plans.
• Evaluate each reason (1, 2, 3) against standard accounting principles, confirming all align with budgeting's role in resource allocation and decision-making.
• Determine that excluding any reason would incomplete the full scope of budgeting benefits.
• Select the option including all three as it matches the multifaceted nature of budgets.

Why A is correct:

• Budgets fulfill planning (forecasting needs), control (tracking variances), and motivation (setting achievable goals), per managerial accounting definitions.

Why the others are wrong:

• B omits reason 3, ignoring budgets' role in performance evaluation.
• C omits reason 2, overlooking budgets' motivational and target-setting functions.
• D omits reason 1, neglecting budgets' core planning purpose.

Final answer: A