Answer
Drinking orange juice is the least used approach. $2\%$ of the population chooses this method.
Work Step by Step
Again, it is quite noticeable by looking at the pie chart that 'drinking orange juice' method takes up the smallest portion of the pie chart and therefore, is the least used approach by the population.
The percentage of the population choosing this method is written under the 'Drinking orange juice' text. It states that only $2\%$ of the population chooses this method.
