Worldwide, how many children die each year from diseases for which vaccinations are available?

Older children can maintain more information in working memory than younger children because ___

a. pronunciation speed increases with age b. the amount of information stored in semantic memory increases with age c. scientific reasoning skills improve with age d. central conceptual structures become more complex with age

Approximately __________ of U.S. young people with a high school diploma have no current plans to go to college

A) one-third B) one-fourth C) one-fifth D) one-sixth