Pick up the correct food chain.

Options

A. Grass `to` Chameleon `to` Insect `to` Bird
B. Grass `to` Fox `to` Rabbit `to` Bird
C. Phytoplankton `to` Zooplankton `to` Fish
D. Fallen leaves `to` Bacteria `to` Insect larvae

Explanation

To determine the correct food chain from the given options, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Identify the Components of Each Food Chain**:
- A food chain consists of producers (plants), primary consumers (herbivores), secondary consumers (carnivores), and sometimes tertiary consumers (top predators).

2. **Analyze Option 1**:
- The first option describes a food chain starting with grass (producer), followed by an insect (primary consumer), then a chameleon (secondary consumer), and finally a bird (tertiary consumer).
- **Evaluation**: This sequence is incorrect because it does not accurately represent a typical food chain. Chameleons are not commonly known to eat insects in this context.

3. **Analyze Option 2**:
- The second option suggests grass (producer), followed by a fox (which is a carnivore), and then a bird.
- **Evaluation**: This food chain is incorrect because a fox does not eat grass. Instead, it would eat herbivores like rabbits.

4. **Analyze Option 3**:
- The third option lists phytoplankton (primary producers), followed by zooplankton (primary consumers), and then fish (secondary consumers).
- **Evaluation**: This is a correct food chain in an aquatic ecosystem. Phytoplankton are consumed by zooplankton, which are then eaten by fish.

5. **Analyze Option 4**:
- The fourth option mentions fallen leaves (detritus), bacteria (decomposers), and insect larvae.
- **Evaluation**: This is incorrect because while bacteria decompose fallen leaves, they are not typically consumed by insect larvae.

6. **Conclusion**:
- After evaluating all options, the only correct food chain is **Option 3**: Phytoplankton → Zooplankton → Fish.

### Final Answer:
The correct food chain is **Option 3**: Phytoplankton → Zooplankton → Fish.

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