the answer is b) A color's brightness or dullness, as well as shadows and contrasts created with color
all-and-response begins with a melodic “phrase.” This is a group of notes that expresses a musical idea. The phrase can be purely vocal or can be played on an instrument. It can also be a mixture of the two. For example, B.B. King was known to make the call with his voice, and answer it with his guitar.
Sally’s use of the photos would be plagiarism