Bandura's bobo doll experiment concludes that

boys are twice as likely as girls to act aggressively when they see adults model aggression.
females don't really play aggressively with their toys
boys and girls both are unaffected by seeing aggressive behavior
boys and girls have equal levels of aggression.

The Bobo Doll Experiment was actually a collection of experiments that was done by Albert Bandura. These experiments involve observing the behavior of children upon seeing how an adult acts aggressively towards a Bobo Doll. Through this, it is concluded that children can indeed learn from the behavior done by adults. Based on this experimentation, it was concluded that boys are twice as likely as girls to act aggressively when seeing adults model aggression. The answer would be the first option.