Hint: India follows a multi-party system in which the parties are classified as the national parties and regional or state parties. The prime objective of a political party is to represent a certain section of society and to ensure their rights and welfare.
After the creation of the states Gujarat and Maharashtra based on the linguistic terms, there was a phenomenon in which the people belonging to the communities of Gujarat and the South Indian migrants were migrating to Maharashtra and taking the well-skilled jobs. This has given rise to the anti-immigrant sentiment among the people in Maharashtra.
In the year 1960, utilizing this anti-immigrant sentiment and to better represent the native people of Maharashtra. Mr. Bal Thackeray founded Shiv Sena as a political party. With a large member base, this party is now the most populous regional party and currently, it is the ruling party of the state. The native people of Maharashtra who belong to a diverse set of castes are the members of the body. Though the Shiv Sena originated in the state of Maharashtra, the party has spread its presence in some other states of the country also.
This party is vocal for the rights of the native population of the state and protects them against the migrants that come to the state for employment and other opportunities. Various communities of Maharashtra like the Marathi community give support to the party.
So, the correct answer is Option C.
Note: The reach of operation of a national party is very wide and it spread across many states. In India, a party that is recognized by four states as a party is known as the National Party. Where the operational reach of a party is limited to a single or two states only, it is a state/regional party.