Question

using only these supplies, which question can leroy investigate with an experiment? do cloth towels dry faster if they are hung in the laundry room or in the backyard? when hung in the laundry room, do black cloth towels or white cloth towels dry more quickly? does a small cloth towel or a large cloth towel dry faster when hung in the backyard?

Explanation:

To determine which question Leroy can investigate with an experiment, we analyze each option:

1. First option: Comparing drying in the laundry room vs. backyard involves different environments (e.g., temperature, humidity, airflow). If the "supplies" do not include controlling these environmental factors (which is likely, as they are external), this experiment is hard to standardize.
2. Second option: Comparing black vs. white towels in the same laundry room environment isolates the variable of towel color. The environment (laundry room) is constant, and the only change is towel color. This is testable with the same setup (hung in the laundry room) and only varying towel color.
3. Third option: Comparing small vs. large towels involves a size difference, which affects surface area/volume ratio. However, if the "supplies" do not specify having both small and large towels of the same material/color (to isolate size), or if the setup (backyard) introduces environmental variability, this is less straightforward than the second option.

The second question (about black vs. white towels in the laundry room) is the most testable with a controlled experiment, as it isolates one variable (towel color) in a consistent environment.

Answer:

When hung in the laundry room, do black cloth towels or white cloth towels dry more quickly?