The emblem of Cheras was “bow and arrow”. The greatest ruler of Cheras was Senguttuvan, the Red Chera or the Good Chera. Senguttuvan introduced the Pattini cult or the worship of Kannagi as the ideal wife in Tamil Nadu.

Dandin and Bharavi were the two court poets of the Pallava dynasty. Dandin was a grammarian and wrote romantic prose and Bharavi was a Sanskrit poet known for his great work Kiratarjuniya based on Mahabharata. Dandin composed Dashakumaracharita. The Pallava kings were orthodox Hindus and worshipped Shiva and Vishnu. The Vaishnava and Saiva literature flourished during this period. Sanskrit was the chief language among the royals and the scholars.

High tides help in navigation. They raise the water level close to the shores. This helps the ships to arrive at the harbour more easily. The high tides also help in fishing. Many more fish come closer to the shore during the high tide. This enables fishermen to get a plentiful catch. The rise and fall of water due to tides is being used to generate electricity in some places.

Akhilesh Ranjan Committee is related to Direct Tax Code. The task force initially headed by Arbind Modi and later on by Akhilesh Ranjan was constituted in 2017 to evolve a Direct Tax Code which would eventually replace the Income Tax Act, 1961. Recently, the draft legislation of the new Direct Tax Code was submitted by the task force to the Government of India. Hence, option A is correct.

World Thyroid Day (WTD) is observed every year on May 25, which is dedicated to thyroid patients and to all who are committed to the study and treatment of thyroid diseases worldwide. The year 2011 is of special importance since it was the first time that World Thyroid Day has been celebrated by the American Thyroid Association, the European Thyroid Association, the Asia-Oceania Thyroid Association and the Latin American Thyroid Society. The objective of World Thyroid Day is to aware of the importance of Thyroid and the prevention and treatment of thyroid diseases. The theme for World Thyroid Day 2021 is "Mother-BabyIodine: The Importance of Iodine on the Woman and her Baby". Hence, option D is correct.

Unsubsidized Natural Solar powered ecosystems:

In these types of ecosystem, the only source of power is solar energy. These are unsubsidized in the sense that there is no auxiliary source of energy available to supplement solar energy.

Tribal Co-operative Marketing Development Federation of India (TRIFED) is a national level cooperative body under the administrative control of the Ministry of Tribal Affairs, Government of India. It was established under the Multi-state Cooperative Societies Act, 1984, under the former Ministry of Welfare.

Agriculture and processed food products Export Development Authority (APEDA) is an apex body that promotes the export trade of agricultural products in India. APEDA was formed under the Act passed by Parliament in December 1985. It is not a cooperative society.

National Agricultural Cooperative Marketing Federation of India Ltd.(NAFED) is registered under the Multi-State Co-operative Societies Act, 1984. It was set up with the object to promote Cooperative marketing of agricultural produce to benefit the farmers. Agricultural farmers are the main members of NAFED. It is a national level farmers cooperative marketing organisation.

Hence, option B is correct.

The correct match is:

* Aranmula Kannadi (Handicraft) – Kerala

* Salem Fabric (Handicraft)  – Tamil Nadu

* Bidriware (Handicraft) - Karnataka

* Kangra Tea (Agriculture) – Himachal Pradesh

A geographical indication (GI) is a name or sign used on products that correspond to a specific geographical location or origin (e.g., a town, region, or country). As an indication of the product's source, the use of a geographical indication acts as a certification that the product possesses certain qualities, is made according to traditional methods, or enjoys a good reputation due to its geographical origin.

Hence, option A is correct.