PART A: Which of the following identifies Martin Seligman's main claim in the text? À Seligman believes that psychology should focus on improving the lives of already happy people, as it is easier than treating those who suffer from mental illnesses. B The three aims of positive psychology that Seligman discusses help to improve people's overall happiness by focusing on strengths and meaning in life. C Seligman believes that the tendency towards happiness or sadness a person experiences is hereditary and can't be easily altered. D Seligman's findings help people achieve a superficial sense of happiness, but he hopes to help people achieve a more meaningful happiness in the future