Answer: all of the answers are correct
Explanation: A budget is an approximation of income and expenditure for a given future time frame and is typically collected and regularly re-evaluated.
Budgets may be made for an individual, a family, a group of people, a corporation or just about anything else that earns money and expenses it. A budget is an institutional resource used by managers at organizations and is often not needed for affected parties to monitor.
Budget is a necessary tool as it amounts the resources thus it works as backbone for all the planning process.
