Answer: D) explicit and implicit costs. Explanation:

Answer: C) Both A & B Explanation: Secondary storage therefore needed because it is non-volatile, meaning it retains its contents without the need for a power supply. It also has the large storage capacity needed to store the operating system and all the programs and files needed by a modern computer system.

Structural equation modeling (SEM) deals with state change in ecology.

1. Shiva temple named "Barah Devra" is situated in Jahazpur.

2. Due to the presence of a group of 12 temples here, it was called Barah Deora. Reportedly, there are 12 Deoras here, but only 11 temples are fully constructed.

3. The Barah Deora group of temples is an important religious and tourist destination. This temple complex is an important evidence of the ancient history and culture of Rajasthan.

Master Pyarelal Gupta is called the “Gandhi of Chirawa”. He was a resident of Chirawa town of Jhunjhunu district of Rajasthan. He was a freedom fighter, social reformer and educationist. He established Amar Seva Samiti in Chirawa and opened a school. He remained engaged in propagating the ideas and ideals of Gandhiji.