Final answer:
The best unit of measurement for the weight of a grasshopper is ounces, as they are small and lightweight, making ounces the most suitable and precise unit for such a small mass.
Step-by-step explanation:
The best unit of measurement for the weight of a grasshopper is ounces. Grasshoppers are small insects and typically weigh very little. The three main units of weight from smallest to largest are ounces, pounds, and tons. An ounce is the smallest unit and is suitable for measuring light weights such as a few peanuts or a grasshopper, which are both significantly less than a pound. To compare, while a large dog could weigh several hundred ounces, it's more practical to measure such a weight in pounds. Tons would only be used for very large and heavy objects, which obviously do not include grasshoppers or standard household items like a jar of jam.
For instance, in scientific contexts, ounces are used to measure very small weights, and grasshoppers, being lightweight, fit this category. Therefore, just as you would measure the weight of a jar of jam in ounces due to its relatively small size, you would also opt to measure the weight of a grasshopper in ounces for precision and convenience.