To determine which conclusion is best supported by the information in the chart, let's break down each statement with respect to the temperatures recorded:
1. Material W is less absorbent than material Z.
- Absorbance relates to how much heat a material takes in. If a material has a higher temperature under the same conditions, it likely absorbs more heat.
- Material W: 87°F
- Material Z: 105°F
- Since material Z has a higher temperature than material W, material Z is more absorbent than material W.
- Therefore, this statement is false.
2. Material Y is the least reflective.
- Reflectiveness generally means the ability to reflect heat rather than absorb it. A material that reflects more heat will have a lower temperature.
- Material Y: 75°F
- Since material Y has the lowest temperature, it is more likely to reflect the most heat.
- Therefore, the statement that material Y is the least reflective is false (it is actually the most reflective).
3. Material X is more reflective than material W.
- Comparing the reflectiveness, a lower temperature indicates higher reflectiveness.
- Material X: 99°F
- Material W: 87°F
- Since material W has a lower temperature, material W is more reflective than material X.
- Therefore, this statement is false.
4. Material Z is the least absorbent.
- The least absorbent material would have the lowest temperature because it absorbs the least amount of heat.
- Material Z: 105°F
- Since material Z has the highest temperature, it is the most absorbent, not the least.
- Therefore, this statement is false.
After evaluating all the statements, the one that aligns correctly with the provided temperatures is:
Material Z is indeed the least absorbent.
Given the context and comparisons made, the answer to the question is clearly [tex]\(4\)[/tex].
