Major communities of the world are

Options

A. shrubs, jungles and gardens
B. ocean, grassland and forest communities
C. parks, ponds and lakes
D. both (2) and (3)

Answer

**Step-by-Step Solution:**

1. **Understanding the Concept of Communities**:
- Communities are defined as groups of organisms that live in the same geographical area and interact with each other. This includes various species of plants, animals, and microorganisms.

2. **Identifying Major Communities**:
- The world is composed of several major communities based on different ecosystems. Some of the primary ones include:
- Ocean communities
- Freshwater communities
- Forest communities
- Grassland communities
- Desert communities

3. **Analyzing the Options Provided**:
- The question presents several options regarding the major communities of the world. We need to evaluate each option based on our understanding of the major communities.

4. **Evaluating Each Option**:
- **Option A**: Shrub, jungle, and garden (Forest communities) - This option is too specific and does not encompass the broader categories of major communities. Therefore, it is incorrect.
- **Option B**: Ocean, grassland, and forest communities - This option includes three of the major community types identified earlier. Thus, it is correct.
- **Option C**: Park, pond, and lake - These are specific types of environments and do not represent major community categories. Hence, this option is incorrect.
- **Option D**: Both options 2 and 3 - Since option 3 is incorrect, this option is also incorrect.

5. **Conclusion**:
- The correct answer is **Option B**: Ocean, grassland, and forest communities are the major communities of the world.