Answer:
energy has many major resources coming from the sun, batteries, outlets, or even from animal to animal. Energy is important because it is essential to all life and helps the world function (aka the organisms in the world)
All of the above so d is the answer to the question
Revenue equal to spending
A balanced budget is a circumstance in economic planning or the budgeting method where total incomes are equivalent to or higher than complete expenses. A budget can be viewed as balanced in hindsight after a full year's value of incomes and expenditures have been acquired and registered. A company's working budget for a forthcoming year can also be called balanced based on forecasts or estimations.