Answer: It assumes when one oligopolist raises the price, all others will follow
Step-by-step explanation:
An oligopoly is a form of market where there are dominated by few group of large sellers.
A kinked demand curve simply happens when the elasticity is not thesame for the lower and higher prices and the demand curve isn't a straight line.
It simply suggests that there are rigid prices and assumes when one oligopolist raises the price, all others will follow.