Which of the two in the following sets belong to the same trophic level ?

Options

A. Grass, Grasshopper
B. Goat, Spider
C. Hawk, Rat
D. Frog, Lizard

Explanation

To determine which of the two in the following sets belong to the same trophic level, we need to analyze the feeding relationships of the organisms in each option.

### Step-by-Step Solution:

1. **Understand Trophic Levels**: Trophic levels refer to the position an organism occupies in a food chain. The primary producers (like plants) are at the first trophic level, herbivores (like grasshoppers) are at the second, and carnivores (like hawks) are at higher levels.

2. **Analyze Option 1: Grass and Grasshopper**
- Grass is a producer (first trophic level).
- Grasshopper is a herbivore that feeds on grass (second trophic level).
- **Conclusion**: They do not belong to the same trophic level.

3. **Analyze Option 2: Goat and Spider**
- Goat is a herbivore that eats grass (second trophic level).
- Spider is a carnivore that eats insects (third trophic level).
- **Conclusion**: They do not belong to the same trophic level.

4. **Analyze Option 3: Hawk and Rat**
- Hawk is a carnivore that eats small animals (higher trophic level).
- Rat is an omnivore that eats grains (could be considered at the second trophic level).
- **Conclusion**: They do not belong to the same trophic level.

5. **Analyze Option 4: Frog and Lizard**
- Frog is a carnivore that eats grasshoppers (third trophic level).
- Lizard is also a carnivore that eats grasshoppers (third trophic level).
- **Conclusion**: They belong to the same trophic level.

### Final Answer:
The organisms that belong to the same trophic level are **Frog and Lizard** (Option 4).