Limnobiology is connected with

Options

A. Fish culture
B. Marine biology
C. Fresh water biology
D. Snails and slugs.

Answer

**Step-by-Step Solution:**

1. **Understanding Limnobiology**: Begin by defining what limnobiology is. Limnobiology is a branch of biology that focuses on the study of freshwater ecosystems.

2. **Identifying Key Components**: Recognize that limnobiology involves the study of both freshwater animals and plants. This includes various organisms that inhabit freshwater environments such as lakes, rivers, and ponds.

3. **Identifying the Correct Option**: Among the given options (fish culture, marine biology, freshwater biology, and snails and slugs), determine which one aligns with the definition of limnobiology.

4. **Analyzing the Options**:
- **Fish Culture**: This is known as pisciculture, which is specifically related to the breeding and rearing of fish, not the broader study of freshwater ecosystems.
- **Marine Biology**: This field focuses on marine organisms and their environments, which is not related to freshwater ecosystems.
- **Freshwater Biology**: This option directly relates to the study of freshwater ecosystems, making it the most relevant choice.
- **Snails and Slugs**: The study of these organisms falls under malacology, which is not specific to freshwater ecosystems.

5. **Conclusion**: Based on the analysis, the correct answer is **freshwater biology**, as it encompasses the study of freshwater ecosystems, which is the primary focus of limnobiology.

---