A Group of Researchers Conducts a Study to Determine If

Multiple Choice

A group of researchers conducts a study to determine if a child's performance is affected by the presence of other children.First,the children are taken to a room with no other children and timed while they complete a puzzle.Later,the same children are taken to a room with four other children and timed while they complete a similar puzzle.In this study,what do you call the length of time it takes to complete the puzzle

A)  extraneous variable 
B)  control variable 
C)  dependent variable 
D)  independent variable