Which of the following procedures could involve either a catheter being inserted through the vagina or a needle inserted through the abdomen and uterus to obtain cells from the placenta?

Melissa's car has a really cool electronic readout that tells her the car's fuel economy. The readout says "Average Miles per Gallon." In statistical terms, this feature is telling Melissa the __________ miles per gallon that her car gets

a. mode b. maximum c. median d. mean

Tiffany Field and her colleagues demonstrated that LBW newborns can benefit from which of the following?

a. nutritional supplements b. increased time in the isolette c. good health care d. massage