3. Low income white farmers
Answer: C
Explanation: I'm not certain, so it might be best to get a second opinion, but with modern technology, plus the corona virus outbreak unemployment rates have been higher than ever (with the exception of The Great Depression).
Answer:
They are trying to find out <u>how many stones there are in the original arch.</u>
Explanation:
Once they've identified the stone, and its main features, they can address what kind of arch was being built there. After this general understanding, the students can predict how many stones were used to raise the arch, and how they were arranged on the structure. The prediction can be proved after all the original structure being totally understood.