Read the following paragraph and then answer the question that follows:

Video games can kill! That is what many who support legislation banning violent titles from underage players have stated. These supporters of video game reform cite studies that show increased statistics of violence among children who play games regularly at home. Opponents of this reform, however, have expressed doubts about the validity of the studies, requesting that further research be done before a dramatic statement is made about all gamers. It seems that the rising popularity of video games among youth has spiked a political debate that may last for several more years to come.

Which sentence from this paragraph is the topic sentence?
It seems that the rising popularity of video games among youth has spiked a political debate that may last for several more years to come.
That is what many who support legislation banning violent titles from underage players have stated.
Video games can kill!
Opponents of this reform, however, have expressed doubts about the validity of the studies, requesting that further research be done before a dramatic statement is made about all gamers.