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The problem asks to identify the point in the graph where a decrease in acceleration is observed. The graph appears to represent the displacement of an object over time with different stages (I, II, III, IV).

From the shape of the graph:

1. **I (Stage I)**: The slope is increasing, indicating positive acceleration.
2. **II (Stage II)**: The slope is constant, indicating zero acceleration (the object is moving at constant velocity).
3. **III (Stage III)**: The slope starts decreasing, indicating negative acceleration (deceleration).
4. **IV (Stage IV)**: The object may be coming to rest or experiencing negative displacement, but it suggests continuous deceleration.

### Answer:
The decrease in acceleration begins at **Stage III**. Therefore, the correct answer is **c) III**.

Would you like further details or explanations on this problem?

Here are 5 related questions to expand on this topic:
1. What is the difference between acceleration and velocity?
2. How do we calculate acceleration from a displacement vs. time graph?
3. What does constant acceleration look like on a displacement vs. time graph?
4. How can we interpret negative acceleration (deceleration) in real-life scenarios?
5. What does it mean when the slope of a displacement graph becomes zero?

**Tip:** When analyzing graphs of motion, always check the slope to determine velocity and how changes in the slope reflect acceleration or deceleration.

La gráfica representada señala el desplazamiento de un cuerpo en distintas etapas: ¿En qué punto se observa una disminución de la aceleración?

Learn how to identify the point where a decrease in acceleration occurs using a displacement-time graph. This problem focuses on key motion concepts, including constant velocity and deceleration. Suitable for high school students.

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