Most vending machines are designed to dispense a certain amount of product in exchange for a certain amount of money. However, many vending machines for newspapers operate on a different principle.
Money for one newspaper opens the machine but when open, all of the newspapers are available to be
taken by the buyer (of course, this rarely happens because few readers want more than one copy of the
newspaper). These machines are called "honor boxes" because the vendor trusts that the buyer will
behave honorably.
Question
In the context of the passage, the phrase "behave honorably" (sentence 4) primarily means
O to prevent other buyers from taking multiple newspapers
o to tell others about the rules for purchasing newspapers
o to report any problems to the newspaper staff
to take only as many newspapers as one has paid for