The challenges that Kyle must tackle to improve the spreadsheet for tracking his spending are c. II and III.
Kyle needs to differentiate the debits from the credits. He must also indicate the transaction dates on the spreadsheet.
Kyle's spreadsheet does not need to contain two backup copies for every entry.
Thus, Kyle can improve his expenditure spreadsheet by C. making it easier to differentiate the credits and the debits and indicating the transaction dates.
Learn more about creating a spreadsheet and tracking personal expenses here: https://brainly.com/question/341992