Answer:
when brands are insufficiently differentiated from one another and when sales are insufficient to justify the current position.
Explanation:
Based on the scenario it can be said that this situation brings up two situations in which repositioning may be necessary and those are when brands are insufficiently differentiated from one another and when sales are insufficient to justify the current position. This is because these two situations indicate that cannibalization may be occurring in which the similar brands are taking up all the market share from these other brands and causing sales to shrink drastically, this leads to the best option being re-positioning in order to save those brands.