To find the percentage of rocky-soil farmers who choose to produce peppers, we'll use the data provided in the table.
From the table:
- Total number of rocky-soil farmers = 250
- Number of rocky-soil farmers producing peppers = 150
We can calculate the proportion of rocky-soil farmers who produce peppers as follows:
\[ \text{Proportion of rocky-soil farmers growing peppers} = \frac{\text{Number of rocky-soil farmers producing peppers}}{\text{Total number of rocky-soil farmers}} = \frac{150}{250} \]
Now, we calculate this proportion:
\[ \frac{150}{250} = 0.6 \]
To express this as a percentage, we multiply by 100:
\[ 0.6 \times 100 = 60.0% \]
Thus, the percentage chance that farmers with rocky soil prefer growing peppers is 60.0%.
The correct answer is 60.0%.