Answer:
A. intensity
Step-by-step explanation:
The Occupy Movement that protested income inequality reached the peak of the movement towards the end of 2011 because of the on-going consequences following the 2008 economic crisis. The common people were affected by the 2008 crisis and the frustration was expressed through the Occupy protests against economic and social injustice. However, as time passed and intensity faded the activity quieted significantly and the protests died out. Hence, this is an example of intensity facet of interest group membership.