The phenomenon of is utilized in the making of motion pictures.

Options

A. Power of accommodation
B. Persistence of vision
C. Farthest vision
D. Braille system

Answer

To solve the question "The phenomenon of _____ is utilized in the making of motion pictures," we need to identify the correct term that describes the phenomenon used in motion pictures.

### Step-by-Step Solution:

1. **Understanding Motion Pictures**:
- Motion pictures are sequences of images that create the illusion of movement when played in rapid succession. This is similar to how we perceive motion in real life.

2. **Identifying the Key Phenomenon**:
- The key phenomenon that allows us to perceive motion from still images is related to how our brain processes visual information.

3. **Explaining Persistence of Vision**:
- The phenomenon known as "persistence of vision" refers to the ability of the human eye and brain to retain an image for a fraction of a second after it has disappeared. This means that if multiple images are presented quickly enough, the brain blends them together, creating the illusion of continuous motion.

4. **Application in Motion Pictures**:
- In motion pictures, a series of still images (frames) are shown in rapid succession (usually at a rate of 24 frames per second or more). Due to persistence of vision, we perceive these images as fluid motion rather than a series of static pictures.

5. **Conclusion**:
- Therefore, the correct answer to fill in the blank is "persistence of vision."

### Final Answer:
The phenomenon of **persistence of vision** is utilized in the making of motion pictures.

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