Answer: D:to know how much money she has for budgeting
Step-by-step explanation:
The options include:
A:to organize when to pay to bills
B:to determine the exact date she can retire
C:to ensure she's paying her fair share in taxes
D:to know how much money she has for budgeting.
The best reason for Nina to monitor her bank account statements online or on her cell phone app is to know how much money she has for budgeting.
Monitoring ones account online will enable one to know the amount that one has in the account and this can ensure that one makes adequate plans on how to spend the money through budgeting.