The safest way to invest money is putting it into a savings account with interest. Basically, this means that you would give the bank your money and sign a contract that you will not take it out of the bank for a certain period of time, and in the meantime, the bank would give you more money just for keeping it with them. This is the safest way because money is usually insured by the state, even if the bank shuts down or if it gets robbed.
