A stage of suspended development is called Diapause.

Answer

### Step-by-Step Solution:

1. **Understanding the Term "Suspended Development":**
- Suspended development refers to a state where growth and development are temporarily halted. During this phase, the organism does not grow or mature but maintains some essential metabolic processes at a reduced rate.

2. **Definition of Diapause:**
- Diapause is a specific term used to describe a stage of developmental arrest in certain organisms, particularly in insects. It is a period where the organism's life processes are significantly slowed down or shut down entirely.

3. **Characteristics of Diapause:**
- Diapause is typically initiated in response to unfavorable environmental conditions, such as extreme temperatures or lack of food. This adaptive strategy allows organisms to survive adverse conditions.

4. **Occurrence of Diapause:**
- Diapause is most commonly observed in insects, especially in arthropods. It serves as a survival mechanism during periods when conditions are not conducive to growth or reproduction.

5. **Conclusion:**
- Given the definition and characteristics of diapause, we can conclude that the statement "A stage of suspended development is called Diapause" is true. Diapause indeed represents a phase of suspended development where vital life processes are minimized or halted.

### Final Answer:
The statement is **True**.

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