The correct answer is D. 1, 2 & 3.
The Bio Toilet Project in Indian Railways is a joint initiative of Indian Railways and DRDO. The human excreta in the bio-toilets is treated through anaerobic digestion process. The bio-toilet reduces the solid human waste to biogas and pure water.
Statement 1 is correct because the Bio Toilet Project in Indian Railways is a joint initiative of Indian Railways and DRDO.
Statement 2 is correct because the human excreta in the bio-toilets is treated through anaerobic digestion process.
Statement 3 is correct because the bio-toilet reduces the solid human waste to biogas and pure water.
Here is a brief explanation of each option:
- Option A: 1 & 3 Only. This option is incorrect because statement 2 is also correct.
- Option B: 2 Only. This option is incorrect because statements 1 and 3 are also correct.
- Option C: 2 & 3 Only. This option is incorrect because statement 1 is also correct.
- Option D: 1, 2 & 3. This option is correct because all three statements are correct.