Locate: Turn on the Show station B checkbox. Set the Radius to the distance of station B from the epicenter. Look on the two circles on the map. Which two places could the epicenter be located now?

Argon, carbon-14, and carbon-12

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.