To determine the percentage of farmers with sandy soil who prefer producing carrots, we can use the relative frequency formula:
\[ \text{Relative frequency} = \left( \frac{\text{Number of farmers with sandy soil who prefer carrots}}{\text{Total number of farmers with sandy soil}} \right) \times 100 \]
From the table provided:
- The number of farmers with sandy soil who prefer carrots = 120
- The total number of farmers with sandy soil = 170
Now we can calculate the percentage:
\[ \text{Relative frequency} = \left( \frac{120}{170} \right) \times 100 \] \[ \text{Relative frequency} = 0.7059 \times 100 \approx 70.6% \]
Rounding to the nearest tenth gives us 70.6%.
Thus, the correct response is:
70.6%