Tipping is a technique of

Options

A. sewage disposal
B. waste disposal
C. smoke treatement
D. effluent

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the technique of "tipping." We need to identify what this technique is associated with among the given options: sewage disposal, waste disposal, smoke treatment, and effluent.

2. **Analyzing the Options**:
- **Sewage Disposal**: This refers to the process of transporting sewage to treatment plants where harmful contaminants are removed. This is not related to tipping.
- **Waste Disposal**: This involves the management of various types of waste generated by communities. Tipping is a method used in waste disposal.
- **Smoke Treatment**: This technique focuses on reducing exhaust smoke from vehicles. It is unrelated to tipping.
- **Effluent**: This is the wastewater discharged after treatment. It does not relate to the concept of tipping.

3. **Identifying the Correct Answer**: After analyzing the options, it is clear that "tipping" is a technique of waste disposal. It involves dumping solid waste into landfills and covering it with soil to prevent attracting pests.

4. **Conclusion**: The correct answer is **waste disposal**.

---