Answer: Savings account at a member bank
Step-by-step explanation:
After the Great Depression caused many to lose their savings on account of so many banks failing, the Federal Government under President Roosevelt established the Federal Deposit Insurance Corporation (FDIC) to ensure that it doesn't happen again.
The FDIC protects the deposits of depositors into banks that are members of the FDIC so if you have money in a member bank, you are insured up to $250,000 should the bank fail.
Credit Unions are not covered by the FDIC but are covered by the National Credit Union Administration (NCUA).