What unit is typically used to measure solids and gases?

Kilograms are the unit that is typically used to measure solids in a broader context, especially when dealing with larger quantities. In the International System of Units (SI), the kilogram is the base unit for mass, making it well-suited for measuring the weight of solids. While grams are often used for smaller amounts and liters for liquids, kilograms are commonly used in both scientific and everyday contexts when measuring heavier solid materials.

For gases, although liters and cubic meters are more frequently used to express volume, mass can also be related through the gas's density to provide a measurement in kilograms. This means that while the focus is often on volume for gases, when converted to mass for calculations or comparisons, kilograms serve as an effective measure. Therefore, given that kilograms are widely recognized and used for solid mass and can be contextually relevant for gases, they are the correct choice in this scenario.