Different interest groups promote many different causes, often working against each other on the same issue. this effect is called
a. pluralism
b. hyperpluralism
c. electioneering
d. lobbying

This is lobbying. An example of lobbying would be an organisation of tobacco companies lobbying   for liberal laws on smoking. This organisation can then compete with an organisation promoting health, which could lobby for stricter laws on smoking.

Pluralism is the existence of diversity among the political parties. 

Its A

Explanation:

It creates an image in the mind of the reader.

               It develops the internal conflict.

               It creates a suspenseful mood.