The Eastern Command of the Indian Navy is headquartered in Visakhapatnam.

Therefore, the correct answer is:

(B) Visakhapatnam

The Eastern Command of the Indian Navy is headquartered in Visakhapatnam. Visakhapatnam, also known as Vizag, is a major port city on the southeast coast of India. The Eastern Naval Command (ENC) plays a crucial role in the maritime defense and security of the eastern part of India. It is responsible for overseeing and coordinating naval operations, exercises, and deployments in the Bay of Bengal and the eastern Indian Ocean region. The command is strategically located to address security challenges and ensure the protection of India's maritime interests in the eastern seas.

Answer: B) Gupta period Explanation:

India is a significant player in the global lentil market, being the largest producer, consumer, and importer of lentils. Lentils are a staple food in many parts of India, and they form an essential part of the diet for a large portion of the population. The country's diverse climate and agricultural practices make it conducive to lentil cultivation. India not only produces lentils to meet domestic demand but also imports them to supplement its needs. Lentils are a crucial source of protein and nutrition in the Indian diet, and their production and consumption are integral to the country's agricultural and food landscape.

Answer: C) Norway Explanation: The case where there is 6 months day, and 6 months night could only happen on poles because The Earth is tilted on its axis. The pole which is away (opposite direction of sun) from the Sun remains in complete darkness till it comes in front of the sun. So we conclude that, countries at the poles have 6 months day, and 6 months night. So countries close to these region have such cases like, Alaska, Antarctica, Norway etc. Norway, the northernmost inhabited region of Europe, there is no sunset from approximately 19 April to 23 August. The extreme sites are the poles, where the sun can be continuously visible for half the year. The North Pole has midnight sun for 6 months from late March to late September.

According to the Ministry of Education, Bihar has the lowest literacy rate in India at 61.8%. The literacy rate in Bihar is 63.82% according to the 2011 census. The state has a male literacy of 73.39% and a female literacy rate of 53.33%

The "Red Data Book" is a list of rare plants, animals, fungi and other organisms that are considered to be at maximum risk of extinction. It contains information on the status, distribution, and conservation of these species. Through the Red Data book, the conservation needs of these organisms are understood and necessary steps are planned for their protection.