The graphic displays results of an Internet survey on the effectiveness and popularity of various treatments for depression. The scale on the horizontal axis represents popularity, P, defined as the fraction of all respondents who tried the treatment; the scale on the vertical axis represents effectiveness, F, defined as the fraction of all respondents who considered a given treatment to be effective.

On the basis of the information provided, select from each of the drop-down menus the option that creates the most accurate statement.

1. The most effective treatment used by the greatest number of people is_________.

A. massage therapy
B. light therapy
C. exercise

2. Among the labeled treatments tried by more than half of the respondents,_________. was the least effective.

A. journaling
B. caffeine
C. fish oil


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