Read the scenario. Imagine you are at a gas station to put some gas in a car, and you see the following directions. Turn off car engine. Gas is extremely flammable. Do not use cell phones, other electronic devices, or anything that could cause sparks or a flame. Pay with credit card at pump or pre-pay inside store. After making payment, remove nozzle and select the grade of gasoline desired. Remain at your vehicle as you pump gas. When finished, return nozzle to pump. Collect change and receipts inside store. According to these directions, which of the following is true? 1. If you do not have a credit card, you can pre-pay for the gas inside the store. 2. MP3 players should not be used as you pump gas, but it is okay to use a cell phone. 3. If you want to purchase a bottle of water while pumping gas, you should enter the store while the nozzle is in your car to save time. 4.If you want a receipt, push “yes” at the pump and one will be printed.

Explanation: in the given excerpt we can see the detailed description of the instructions to put gas in a car in a specific gas station. When we are asked which affirmation is true, according to the text, we have to read the text carefully and don't assume anything else but what the text says. In this case the correct affirmation is option 1 "If you do not have a credit card, you can pre-pay for the gas inside the store" because the text says: "Pay with credit card at pump or pre-pay inside store".