Which best describes the purpose of recording past income and spending in a budget? to know the historic cost of goods to serve as the basis for future planning to learn why having savings is important to learn why expenditures are likely to increase

I believe the answer is: to serve as a basis for future planning

Recording pass income/spending would give you a general guideline on how much a cost can occurs for a certain activities along with potential unlikely events that might occurs. This knowledge would help you in future planning and prevent you from making the same financial mistake like you did in the past.

to serve as a basis for future planning is correct.

i know right it’s not fair some people are just so rude unlike you your actually trying to get to know people and i think that is very kind