Which of the Following Is an Example of Two Dependent

Multiple Choice

Which of the following is an example of two dependent samples?

A) Number of text messages sent to college freshmen and the number of emails sent to the same group of college freshmen
B) Pretest scores of preschool children and posttest scores of the same group of children
C) Science test scores of boys and science test scores of girls
D) Weight of zoo animals in the San Diego Zoo and weight of zoo animals in the Central Park Zoo