Which material typically has the lowest density among those listed?

Pine is typically the material with the lowest density among the options provided. It is a softwood that is known for its lightweight nature, which contributes to its popularity in construction and furniture making. In general, woods like pine have significantly lower densities compared to hardwoods like oak, which is denser and heavier.

Steel, being a metal, inherently has a much higher density than both pine and oak. Dense materials, as a category, include various substances that typically have high densities, such as metals or heavy woods, making them denser than pine as well.

Thus, when considering density, pine stands out as the least dense option, making it the correct answer to the question.