Greek's emphasised on

Options

A. inductive reasoning
B. deductive reasoning
C. Both (a) and (b)
D. practical use of geometry

Explanation

To solve the question "Greeks emphasized on," we need to analyze the options provided: right inductive reasoning, deductive reasoning, both A and B, and practical use of geometry.

### Step-by-Step Solution:

1. **Understanding the Options**:
- **Inductive Reasoning**: This is a method of reasoning in which a general rule or conclusion is formed based on specific examples or observations.
- **Deductive Reasoning**: This is a logical process where a conclusion is reached based on the concordance of multiple premises that are generally assumed to be true.
- **Practical Use of Geometry**: This refers to the application of geometric principles in real-world situations.

2. **Analyzing Greek Contributions**:
- The Greeks made significant contributions to mathematics and geometry, particularly through the use of logical reasoning.
- They emphasized the importance of proving statements through logical deduction rather than just observing patterns.

3. **Identifying the Correct Emphasis**:
- The Greeks were particularly known for their use of **deductive reasoning** to establish the truth of mathematical statements. This method allows for conclusions to be drawn from established premises, which is foundational in geometry.

4. **Conclusion**:
- Based on the analysis, the Greeks emphasized **deductive reasoning**. Therefore, the correct answer is **option B**.

### Final Answer:
The Greeks emphasized on **deductive reasoning**.

---