Which figure below is the best estimate of the percentage of new mothers who develop the "baby blues" within a few days of childbirth?

The most preventable cause of death in the United States is the use of ____.

A) alcohol B) caffeine C) tobacco D) heroin

According to Levinson, the transition to middle adulthood requires the adult male come to grips with four major conflicts. Which of the following is one of the major conflicts?

A. being young versus being old B. being attractive versus being unattractive C. being married versus being single D. being extroverted versus being introverted