Select the one word-pair / number-pair / letter cluster which is different from the other three alternatives.

Options

A. Light: Heavy
B. Kind : Cruel
C. Soft: Hard
D. Vacant: Empty

Answer

To solve the question, we need to analyze each option and determine which one is different from the others based on the relationship between the word pairs.

### Step-by-Step Solution:

1. **Analyze the First Option:**
- Words: Light and Heavy
- Relationship: These words are opposites (antonyms).

2. **Analyze the Second Option:**
- Words: Kind and Cruel
- Relationship: These words are also opposites (antonyms).

3. **Analyze the Third Option:**
- Words: Soft and Hard
- Relationship: These words are opposites (antonyms).

4. **Analyze the Fourth Option:**
- Words: Vacant and Empty
- Relationship: These words are synonymous (they mean the same thing).

5. **Conclusion:**
- The first three options consist of pairs of antonyms, while the fourth option consists of synonyms. Therefore, the fourth option (Vacant and Empty) is different from the other three.

### Final Answer:
The correct answer is option 4: Vacant and Empty.