Two sections from the text that best support the answer to Part A are:
E. "So in the last 10 years and the hope for the future, we've seen the beginnings of a science of positive psychology, a science of what makes life worth living." ( Paragraph 17)
F. "But once you fractionate happiness the way I do — not just positive emotion, that's not nearly enough — there's flow in life, and there's meaning in life." ( Paragraph 37).
In the text, the Psychologist shows that happy lives can be classified in three ways, namely; the pleasant, engaging, and meaningful lives.
This classification is supported by the sentences above because they talk about positive psychology which discusses a meaningful life.
Sentence F elaborates on the three kinds of happiness that form the main claim of the text.
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https://brainly.com/question/12011520