don't know if it's right but I think the option Geographic location
Answer:
<h2> A teacher can make an assumption thatwith a small standard deviation the students understood the material uniformly.</h2>
This is a hard one to answer. The reason is that you are asked to distinguish between 2 schools of thought that are very close together. Not only that, but the characteristic you are looking for is not mentioned in either description.
Since semiotics brings in many more fields of study than does iconography, then I would go with iconography. This school of thought seems content just to find the symbols according to its description. What is done with them is mentioned in the other school but is not elaborated upon.
My answer would be iconography.
I'm going to go with A. radial balance
and D. the edges of the road :)
Blacksmiths make many handy tools and horse shoes. Basically anything made out of iron.
Hope this helps!