The majority of TV programs and computer games are full of violence which promotes aggressive behaviour in children.
Should the verb ''promote'' be singular or plural? and why?
Thank you for enlighten me.
What promotes the behavior? The violence? The programs and games? Or the situation in general?
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.