<span>Michelangelo's sculpture of David is a metaphor for: courage, because when facing the giant he was not scared, determination, because he was determined to serve God, and strength, because he was a warrior and defeated the enemies of God.</span>
I believe the answer is, actually, D. The red will be too exciting and distracting to the calm library.
If you research the library, it is actually quite a colourful place, but the red on the inside, as well as the outside, would have been too much and indeed; distracting and exciting.
