Answered

Why wouldnt the postmodern architect of the San Antonio Library want to continue his bold, red exterior design throughout the interior
A.The red colors will make visitors hungry
B.The red paint is too expensive to use on the interior
C. A red background will make it hard to hang artwork on the walls
D. The red will be too exciting and distracting to the calm library



Answer :

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. 
Your best answer is D. The red color is too exciting and distracting. I believe this because we do not hear about the paints cost, paint does not influence the wall structure, and colors cannot make you hungry. I hope I helped, good luck!