Which metric unit is used to express the amount of space an object occupies?

• A. second
• B. gram
• C. liter
• D. meter

Answer: (C)

Verified step by step guidance

1. Understand that the question asks for the metric unit used to express the amount of space an object occupies, which refers to the concept of volume.
2. Recall that volume is the measure of the three-dimensional space an object takes up.
3. Identify common metric units related to physical quantities: 'second' measures time, 'gram' measures mass, 'meter' measures length, and 'liter' measures volume.
4. Recognize that the correct unit for volume in the metric system is the liter, which is commonly used to measure the space occupied by liquids and gases.
5. Conclude that among the given options, 'liter' is the appropriate metric unit to express the amount of space an object occupies.