Concept:Pressure groups and political parties mainly differ in their primary objectives.
Explanation:Political parties are organized to contest elections and win political power.
Once voted into office, they form the government and implement their manifestos.
Pressure groups, on the other hand, ordinarily do not contest elections.
Their main aim is to influence or persuade the government to make decisions that favour their members.
For example, a trade union may press for higher workers' wages without seeking to capture state power.
Similarly, a students' association can lobby for better educational policies without presenting candidates for election.
Thus, political parties chase power, while pressure groups chase influence.
It is this difference in objective that clearly separates them.
Answer:B. Objective