Levinson studied the life paths of men, whereas Helson studied the life paths of women. Although these researchers found similar patterns in both sexes, their interpretation of their findings about the influence of midlife concerns was different. Which of the following represents an assumption of one of these researchers rather than an inference or an observation? a. The transition at midlife forces people to choose between opposite possibilities (polarities).b. Adult development requires mastery of developmental tasks experienced in successive stages. c. Most of the men in Levinson’s study found the midlife transition painful. d. Helson found a shift toward less traditionally feminine attitudes between the ages of 27 and the early forties among women. e. Women who did not commit themselves in early adulthood to a lifestyle pattern faced fewer challenges.