Which of the following food chains are in the right order? a. grass-sheep-wolf b. algae-shark-plankton c. rabbit-grass-fox d. big fish-little fish-seaweed

The first food chain, "Grass→Sheep→Wolf" is in the right order.

B is incorrect because it jumps from algae to shark, when plankton should be in the middle.
C is incorrect because it starts with the rabbit instead of grass.
D makes sense but is still incorrect because it's backwards. Food chains are meant to start from the bottom and work all the way up. Meaning a food chain should generally start with some sort of plant and end with the biggest animal/predator.

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