Answer:
b) a just-noticeable difference
Explanation:
The role of a just-noticeable difference best describes what is happening to Maria because as the sun is setting the room becomes darker and the light required to finish the painting would be affected requiring an introduction of an artificial light.
William Poole believes economics should be taught in schools because students will learn how economics helps achieve dreams.
Answer:
I'm pretty sure it is B. To encourage moisture to evaporate
Explanation: