Question 5 Which of the following does NOT represent an advantage of repeated-measures designs over independent-measures designs?
a fewer number of subjects needed
b. elimination of error due to individual differences
C. preferred for measuring changes over time
d. decrease in possibility of history effects

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b