Concept:The importance of a political party lies in its central objective of gaining authority to govern.Explanation:A political party is a group of people who come together to contest elections and hold power in government.Its main significance is to seek and exercise political power to implement its policies.Options A and B describe negative activities, which are not the fundamental purpose of a party.Option D is not the primary role of a political party.Therefore, the most accurate reason is that it seeks political power.Answer:C. seeks political power