Final answer:
An approved depository for earnest money includes a bank within the state of Florida.
Step-by-step explanation:
The approved depositories for earnest money include a bank within the state of Florida. This means that a bank account located in the state of Florida can be used as a depository for earnest money. Other options listed in the question, such as a stock brokerage firm, broker's personal checking account, or safe in a real estate office, are not typically approved depositories for earnest money.