In order to sit next to grandma ellie at , jason pushed his sister abby out of the chair. this is an example of aggression.

correct answer is instrumental aggression

Explanation:

the correct answer is instrumental aggression because  

Instrumental aggression is that aggressive those behaviour intended to achieve goal and aggression is made against other people  

that is used for securing some reward or achieve goal like a victory

and Instrumental aggression have some unique type of characteristics that differentiates it from the  impulsive aggression

so here the correct answer is instrumental aggression

they produces sugar..

hope this , question was a little open ended

answer; archaeologists;