Dr. Ford wants to test the hypothesis that room color can affect memory. To test this, he randomly assigns 10 students to a condition where they study a written passage while seated in a room that is painted a lilac color. The other 10 students study the passage while seated in an identical room that is painted bright orange. After both groups studied the passage for 1 hour, they were given a multiple-choice test over the material. Dr. Ford then calculated how many questions the students in both groups got right. In Dr. Ford's study, the dependent variable is the

a. the gender of the students.
b. the color of the room in which the students studied the passage.
c. the students who scored highly on the test.
d. the students' test scores.

Dr Ford conducted a study, according to him a color of a room can influence marks of a student. So he selected 20 students . In which 10 students sat in a room that was painted in a lilac color whereas 10 students were made to seat in a room painted bright orange. Here the color of a room will be independent variable whereas the test scores will be dependent variable because good score of a student depends on the color of a room.

Bright color gives vibrant motivation which helps in scoring good marks because bright color helps students to retain the memory. Whereas light colors have an adverse effect in the memory.