The situation that a savings account would be the best investment to earn interest is A:saving for retirement in 20 years.
Savings account can regarded as interest-bearing account where a deposit will be made and there would be an interest on it.
In a savings account, the deposit account is been operated by aa bank or other financial institution.
We can conclude that saving for retirement in 20 years would earn more interest is saved in a savings account because of time frame.
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