Correct Option (C)
The passage explicitly states that waste-to-energy "ideally it fits in the chain after segregation (between wet waste and the rest), collection, recycling, and before getting to the landfill." This sequence establishes segregation as a foundational prerequisite for the effective integration of waste-to-energy processes. Therefore, ensuring proper segregation is the initial step to facilitate the supply of suitable waste for energy generation.
Incorrect Options:
The passage does not provide any information regarding the cost-effectiveness or inexpensiveness of generating energy from municipal solid waste. Therefore, statement (A) cannot be inferred from the given text.
While the passage identifies biomethanation as a "major solution" for processing the biodegradable component (over 50%), it also states that the "technology most appropriate in converting waste to energy depends on what is in the waste (that is biodegradable versus non-biodegradable component) and its calorific value." This indicates that no single technology is universally ideal, but rather the choice is context-dependent, making statement (B) incorrect.
The passage explicitly states that "The biodegradable component of India municipal solid waste is a little over 50 per cent, and biomethanation offers a major solution for processing this." This contradicts the assertion in statement (D) that the biodegradable component is inadequate; instead, it highlights its significant potential for energy recovery through biomethanation.