Witch is a primary way an archaeologist would decide where a tample stood a. evaluating clues on clay tablets b. reading about the remains of an ancient statue c. digging in a small rise in the landscape

B - rading about the remains of an ancient statue.

While both A and C are very romantic, both would take ages for a professional working archaeologist to dig up anything useful in a reasonable amount of time. The most effective thing that he can do is read primary sources and based on those decide where a temple stood. 

The answer coastal regions and peary land