Answer:
A. Checking accounts are convenient but must be carefully maintained
Explanation:
The answer choice A is most relative, as the paragraph starts off by listing all of the pros of owning a checking account and what they are used for, thus demonstrating their convenient features. Later on in the paragraph, the author uses the transition "however" and then proceeds to explain how one must be careful when owning one due to the risks of using another bank's ATM, withdrawling too much, etc. By including this, they are saying it must be carefully maintained.
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