A survey was recently given to all high school students

A survey was recently given to all high school students in a certain town to measure the effect of environmental factors on attitudes and behavior, and the results indicated that students who play a minimum of two hours per day of violent video games are more likely to engage in violent behavior in school and at home. Therefore, playing violent video games encourages violence among teens.

Which of the following, if true, would most weaken the argument above?

A. The same survey was conducted in a neighboring town with similar results.

B. Playing violent video games keeps violent teenagers at home and prevents them from engaging in publicly aggressive behavior.

C. The survey used a standard question format that did not allow students to produce responses that could not be interpreted incorrectly.

D. Students who play violent video games often have a history of behavioral issues leading back to early childhood.

E. The survey was given over a period of days to ensure that all students attending the high school would participate.