Answer: B) Gupta period Explanation:

Asia's largest sugar mill is located in Khatouli, Muzaffarnagar district of Uttar Pradesh. The Triveni Sugar Mill in Khatouli is the largest in Asia in terms of production and storage capacity. The mill has been operational since 1933. 

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.