The uncertainty principle was first stated by

Options

A. Pauli
B. Heisenberg
C. Planck
D. de Broglie

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who first stated the Uncertainty Principle.

2. **Identifying the Principle**: The Uncertainty Principle is a fundamental concept in quantum mechanics that describes the limitations in measuring certain pairs of properties of a particle, such as position and momentum.

3. **Recalling the Key Equation**: The equation associated with the Uncertainty Principle is:
\[ \Delta x \cdot \Delta p \geq \frac{h}{4\pi} \]
where \(\Delta x\) is the uncertainty in position, \(\Delta p\) is the uncertainty in momentum, and \(h\) is Planck's constant.

4. **Attributing the Principle**: The Uncertainty Principle was first stated by Werner Heisenberg, a German physicist.

5. **Conclusion**: Therefore, the answer to the question is that the Uncertainty Principle was first stated by Heisenberg.

**Final Answer**: The Uncertainty Principle was first stated by Heisenberg.

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