Which sign seen with aging would most likely be a sign of developing Alzheimer's disease?
A) confusion with time, including the current season
B) making an error when balancing the checkbook
C) experiencing visual changes due to cataracts
D) being unable to find the right word to use
Question 2
In studies examining the effectiveness of a nutrient, subjects are divided into two groups. The ____ group receives the nutrient, while the control group does not.
A) experimental
B) placebo
C) randomized
D) sample