Dtermination cleavage is found in

Options

A. Coelenterates
B. Annelida
C. Nematodes
D. All the above.

Answer

### Step-by-Step Solution:

1. **Understanding Cleavage**: Cleavage refers to the series of rapid cell divisions that occur after fertilization, leading to the formation of an embryo. There are two main types of cleavage: determinate and indeterminate.

2. **Defining Determinate Cleavage**: In determinate cleavage, the fate of each cell is determined early in the development process. This means that each cell has a specific role and will develop into a specific type of tissue or organ.

3. **Identifying Organisms**: The question asks where determinate cleavage is found. The options provided are:
- A. Cnidaria
- B. Annelida
- C. Nematodes
- D. All of the above

4. **Analyzing Each Option**:
- **Cnidaria**: This group includes organisms like jellyfish and corals, which exhibit determinate cleavage.
- **Annelida**: This group includes segmented worms, which also show determinate cleavage.
- **Nematodes**: Roundworms in this group also demonstrate determinate cleavage.

5. **Conclusion**: Since all the mentioned groups (Cnidaria, Annelida, and Nematodes) exhibit determinate cleavage, the correct answer is option D: All of the above.

### Final Answer:
The answer is **D. All of the above**.