How does the image most support the central idea of the text?

I am unsure if this is the correct question, but this is the full possible question:

Read the passage and study the drawing from Sugar Changed the World.

How does the image most support the central idea of this text?

O It emphasizes how time-consuming the sugar-making process was.

O It illustrates the importance of a warm climate to sugar production.

O It shows the large numbers of workers and tasks required to refine sugar.

O It clarifies the many differences between producing sugar and producing honey.

The answer to this is It shows the large numbers of workers and tasks required to refine sugar.  (3rd option).

(The picture below is part of the question.)

i think its:

c. a disadvantage of the proposal is that there will be fewer people under the monarchy.