What can you use to check if your vehicle's tires need replacing? your finger a ruler a penny a quarter

The question is asking for the best method to check if a vehicle's tires need replacing. The options provided are: your finger, a ruler, a penny, and a quarter. The most common and practical method used by many people is the "penny test". This involves inserting a penny into's tread with Lincoln's head upside down and facing you. If you can see the top of Lincoln's head, it means the tread depth is less than 2/32 of an inch, which is the minimum recommended depth and indicates that the tires need to be replaced. This method is simple and does not require any special tools, making it a practical choice for quick checks on the go. The other options, such as using your finger or a ruler, are less common and may not provide as accurate a measurement as the penny test. A quarter is not typically used for this purpose. Therefore, the correct answer is "a penny".