Sociobiology is the study of

Options

A. Animal behaviour
B. Plant interactions
C. Animal plants interactions
D. Evolutionary function of social behaviour.

Answer

**Step-by-Step Solution:**

1. **Understanding Sociobiology**: Begin by defining what sociobiology is. Sociobiology is a field of study that examines the evolutionary basis of social behavior in animals, including humans.

2. **Evaluating the Options**:
- **Option 1**: "The study of animal behavior" - This is known as Ethology, which is not the definition of sociobiology. Therefore, this option is incorrect.
- **Option 2**: "Plant interaction" - This refers to plant ecology, which focuses on the interactions of plants with their environment and is not related to sociobiology. Hence, this option is also incorrect.
- **Option 3**: "Animal-plant interaction" - This describes ecological relationships and is typically studied under ecosystem dynamics, not sociobiology. Thus, this option is incorrect as well.
- **Option 4**: "Evolutionary function of social behavior" - This accurately describes sociobiology, as it studies how social behaviors have evolved and their adaptive significance. Therefore, this is the correct option.

3. **Conclusion**: Based on the evaluation of all options, the correct answer is option 4, which states that sociobiology is the study of the evolutionary function of social behavior.

**Final Answer**: Sociobiology is the study of the evolutionary function of social behavior (Option 4).

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