Concept:Pressure groups aim to influence policy, but their narrow focus can conflict with the wider public good.
Explanation:Pressure groups are formed to advance specific interests, such as those of workers, businesses, or professionals.
Their main goal is to shape government decisions in favour of their own members.
Because of this, their demands may not match what is best for the general population.
This makes the pursuit of self-interest over public interest a recognised limitation.
The other options are not general limitations: pressure groups do not represent only the wealthy, they can influence policies, and they do not usually rely on violent tactics.
Answer:Option C. They may prioritize their own interests over the public interest.