The teotihuacan civilization

a. flourished on the coast of gulf of mexico
b. was destroyed by the spanish conquistadors
c. never expanded more than a few miles beyond the borders of the city
d. built the pyramid of the sun

The correct answer is the last one:
d. built the Pyramid of the Sun

It was not on the coast, but it was in the center of Mexico - first answer is false.
Also, it was destroyed long before the Spanish conquistadors - it was the Aztecs that were destroyed by the Spanish.

The third option is also false- it had an influence on a big area.

And this too use this if needed