Volcanos are a geologic phenomenon that occurs at tectonic plate boundaries. Which provides the best evidence for the theory that faults and volcanoes are results of tectonic plate interactions? a. Faults on tectonic plates are in constant motion, but volcanoes may not erupt for many
years
b. Tectonic plates that have many faults do not usually have volcanoes.
a. Faults and volcanoes existed long before there were tectonic plates.
b. Faults and volcanoes are often found at tectonic plate boundaries.