Mark the correct option w.r.t. hydroponics

Options

A. It can avoid problem of soil borne pathogens
B. It avoids problem of weeding
C. Out of season vegetables and flowers can be obtained
D. All of these

Answer

### Step-by-Step Solution:

1. **Understanding Hydroponics**: Hydroponics is a method of growing plants without soil, using a nutrient-rich water solution instead. This technique allows for precise control over nutrient delivery and can lead to faster plant growth.

2. **Analyzing the Options**:
- **Option 1**: "It can avoid the problem of soil-borne pathogens."
- This statement is true because hydroponics eliminates the use of soil, which is a common medium for pathogens.

- **Option 2**: "It avoids the problem of weeding."
- This statement is also true. Since hydroponics does not use soil, there is no environment for weeds to grow, thus eliminating the need for weeding.

- **Option 3**: "Out of season vegetables and fruits can be obtained."
- This statement is true as well. Hydroponics allows for controlled growing conditions, enabling the cultivation of various plants regardless of the season.

- **Option 4**: "All of these."
- Since all the previous statements (1, 2, and 3) are true, this option is also correct.

3. **Conclusion**: Since all the options provided are correct, the correct answer is **Option 4: All of these**.