Step 1: Understanding the Question:
The question asks about the country of origin of a specific rice nursery raising method known as the Dapog method.
Step 2: Key Concept:
The Dapog method is a soil-less, mat type nursery technique. Pre-germinated rice seeds are spread in a thin, dense layer over a raised bed lined with banana leaves, polythene sheet or old gunny cloth, and watered often. Within about 12 to 14 days the seedlings form a thin rollable mat that is lifted and transplanted.
Step 3: Detailed Explanation:
This technique was developed and popularized by the International Rice Research Institute (IRRI), which is based in the Philippines, and it reached Indian rice growing tracts as an import of that Philippine research package.
Myanmar, Japan and China are all rice growing countries with their own nursery traditions (for example the Japanese mat nursery used for mechanical transplanting), but the specific named Dapog technique taught in Indian agronomy is credited to the Philippines through IRRI, not to these other countries.
Step 4: Final Answer:
The Dapog method came to India from the Philippines, option (4).