Cuckoo lays eggs in the nest of crow during breeding season. This is an example for

Options

A. Ectoparasitism
B. Endoparasitism
C. Brood parasitism
D. Mutualism

Answer

To answer the question regarding the cuckoo laying its eggs in the nest of a crow during the breeding season, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Behavior**: The cuckoo is known for its unique reproductive strategy where it does not build its own nest. Instead, it lays its eggs in the nests of other birds, such as crows.

2. **Identifying the Relationship**: This behavior involves a specific type of relationship between the cuckoo (the parasite) and the crow (the host). The cuckoo benefits by having its eggs incubated and raised by the crow, while the crow is unaware that it is raising a chick that is not its own.

3. **Defining Brood Parasitism**: The term that describes this behavior is "brood parasitism." In brood parasitism, a bird lays its eggs in the nest of another bird, which then incubates and raises the young, often at the expense of its own offspring.

4. **Eliminating Other Options**:
- **Ectoparasitism** refers to parasites that live on the outside of the host (like fleas on a dog).
- **Endoparasitism** refers to parasites that live inside the host (like tapeworms).
- **Mutualism** is a relationship where both species benefit, which is not the case here.

5. **Conclusion**: Given the definition and the nature of the relationship between the cuckoo and the crow, the correct answer is **brood parasitism**.

### Final Answer:
The correct answer is **C. Brood Parasitism**.