Why do seeds switch to anaerobic respiration when the soil is submerged under water during germination?

1. Aerobic respiration requires oxygen, while anaerobic respiration does not. 2. Higher plants and animals shift to anaerobic respiration when oxygen in the surrounding is depleted. 3. A waterlogged soil cuts off the oxygen supply to germinating seeds. 4. The lactic-acid option is wrong because lactic acid is a tiring by-product, not a requirement, so it is ruled out. 5. The absent-glucose option is wrong because glycolysis still needs glucose, so it is ruled out. 6. The destroyed-mitochondria option is wrong because water does not destroy organelles here, so it is ruled out. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 2 "Life Processes in Living Organisms Part 1", p.24_