You try to remember a phone number by repeating it over and over to yourself. What type of rehearsal are you using?

The ___________ stage of labor is the quickest and easiest and occurs when the child's umbilical cord and the placenta are expelled from the mother

a. first c. third b. second d. fourth

What proportion of 3-year-old American children receive less than the recommended amount of calcium?

a. 1/3 b. 1/4 c. 2/3 d. 1/2