What were the two main groups within the commoners' social class

The groups are:

1. Artisans

2. Farmers

Explanation:

Artisans - Artisans were average citizens, but at the same time were viewed as a higher social class than the farmers. They dealt with art works, for example, ceramics or gold adornments for the aristocrats.

Farmers  - At the lower part of the social class were the Farmers . The Farmers  were additionally the biggest and the main class inside the Inca kingdom. Farmers buckled down days and sent 66% of their yields to the public authority and the ministers. The Inca kingdom depended on the creation of the Farmers for its abundance and achievement.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.