Final answer:
The best tool to measure small objects like a toothpick is a ruler, which allows for precise measurements in inches, centimeters, or millimeters.
Step-by-step explanation:
When tasked with measuring a small object such as a toothpick, the best tool to use would be a ruler. Toothpicks are quite minute and require a precise unit of measurement. This is why units like inches, centimeters, or millimeters are perfect for such tasks. The ruler allows for accurate measurement in these smaller units, making it ideal for measuring items that are not too large. For instance, a toothpick, which typically can vary from about 2 to 3 inches long, would be most effectively measured in centimeters or millimeters rather than feet due to its small size.