Which of the following is not a type of manure collecting method?

Correct option is A

Use cattle shed with kaccha floor": is not considered a proper manure collection method because a kaccha floor (unpaved) does not facilitate efficient collection of manure, allowing it to mix with the ground and making it difficult to gather.
Dry Earth System," "Loose Box System," and "Use cattle shed with permeable floor for collecting urine": are all recognized methods for collecting manure from cattle sheds.