Explanation:

- Option 1: John Napier

- Known for developing logarithms.

- Lived in the late 16th and early 17th centuries.

- Not related to explosives or dynamite.

- Option 2: Alfred Nobel

- Invented dynamite in 1867.

- A Swedish chemist, engineer, and inventor.

- Also known for the Nobel Prizes.

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- Option 3: Volta

- Alessandro Volta was an Italian physicist.

- Known for creating the first chemical battery, the Voltaic Pile.

- Did not discover dynamite.

- Option 4: Jean Picard

- A French astronomer.

- Known for measuring the Earth and contributing to astronomy.

- Unrelated to dynamite or explosives.