The correct answer would be option B. Transitional Argument. The second sentence in this paragraph is an example of a transitional argument. What makes this sentence a transitional argument because of the introductory word "fortunately" which signals a transition of ideas in the paragraph.
The right answer is B. Only the positive psychologists take a judgmental approach to values. Positive psychology is one that studies the interaction of the expression of positive emotions and the human body. These investigations have proven that the human body is healthier while more positive emotions experience. In the studies of positive psychology, several factors are considered, such as values, and not only emotions.
I hope my answer can help you.