Question

if the scientists had repeated the steps used in study 2 at 1,500°c, the viscosity of feo would most likely be found:
a below 100 poises.
b between 100 and 150 poises.
c between 150 and 200 poises.
d above 300 poises.

Explanation:

To solve this, we assume there's a trend in Study 2 (likely from a passage or graph) showing that as temperature increases, the viscosity of FeO decreases (or follows a pattern where higher temp means lower viscosity, or we analyze the trend). At 1,500°C (higher than previous temps in Study 2, presumably), the viscosity would be lower. Option A (below 100 poises) fits if the trend is decreasing with temp, as increasing temp reduces viscosity, so at 1500°C, it's below 100.

Answer:

A. below 100 poises.