Answer:
A. 2 hours walking; 12 hours running.
I am aware this is a multiple choice question. There is only one answer.
Answer: "checking account balances"
Explanation:
If you had the options:
bartering
minting
checking account balances
The option "checking account balances" is the answer to your problem. In simple terms, this is the "money you have in the bank."
<em>Learn more about your problem here: brainly.com/question/678565</em>