Source of fresh water are

Options

A. sea
B. salty lakes
C. underground water
D. oceans

Explanation

### Step-by-Step Solution:

1. **Understanding Fresh Water Sources**: Fresh water is essential for life and is found in various natural sources. We need to identify these sources.

2. **Identifying Potential Sources**: The common sources of fresh water include:
- Glaciers
- Lakes
- Reservoirs
- Ponds
- Rivers
- Streams
- Wetlands
- Groundwater

3. **Eliminating Non-Fresh Water Sources**: It is important to note that not all water bodies are sources of fresh water. For example:
- Oceans and seas contain saltwater and are not sources of fresh water.
- Salty lakes also do not provide fresh water.

4. **Listing Valid Fresh Water Sources**: From the identified sources, the following are valid sources of fresh water:
- Glaciers
- Lakes
- Reservoirs
- Ponds
- Rivers
- Streams
- Wetlands
- Groundwater

5. **Conclusion**: The sources of fresh water include glaciers, lakes, reservoirs, ponds, rivers, streams, wetlands, and groundwater.