Answer:
The correct option will be option 3 (seeds, mice, snakes).
Step-by-step explanation:
Food chain is a hierarchical series of organisms starting from producer organisms to carniovre species, each representing a different trophic level , linked to one another by the food they eat. 
Sequence of food chain is as : 
 Tertiary consumers (top carnivores-eat carnivores )
 ↑
 Secondary consumers (carnivores-eat herbivores)
 ↑
 Primary consumers (herbivores-eat plants)
 ↑
 Primary producers (photosynthetic organisms)
 
In food chain of seeds, mice, snakes :
 snakes (carnivore-eat mice)
 ↑
 mice (herbivore-eat seeds) 
 ↑
 seeds (photosynthetic plant part)
Thus, option 3- seeds, mice, snakes is the correct answer.