Final answer:
You should place your money on the provided tray or directly hand it to the cashier when purchasing items in a store in Mexico. Various forms of currency, such as cash or credit cards, can be used to complete a transaction, contributing to the flow of money in the economy.
Step-by-step explanation:
When purchasing an item in a store in Mexico, you generally hand your money to the cashier or place it on the provided tray or space at the register. This practice respects the personal space and provides an orderly process for the transaction.
While paying, you may use different forms of currency, which, when in circulation within a country's economy, are composed of 'M1' and 'M2' money supplies. 'M1' includes physical currency and checks and is the most liquid form of money, readily accepted for transactions.
'M2' includes savings deposits and is less liquid, but can be converted into 'M1' through ATMs. Credit card payments are regarded as spending 'M1' from the credit card company’s account that must be repaid. It is this exchange of money for goods and services that contributes to money flows in an economy, either into or out of the country, depending on the nature of the transaction.
When purchasing an item in a store in Mexico, you should place your money with the cashier at the checkout counter. In Mexico, it is common for cashiers to handle the money directly, so you can hand it to them or place it on the counter in front of them. In some cases, you may need to wait for the cashier to indicate where to place the money, so it's always a good idea to observe what other customers are doing.