Correct Answer: Henry Cavendish

Solution : The correct option is Henry Cavendish .

The gravitational constant, or "G," was not discovered by a single person. It is a constant in physics that was discovered via experimental investigation. In an experiment known as the Cavendish experiment, physicist Henry Cavendish determined the value of G for the first time between 1797 and 1798. The purpose of this experiment was to calculate the gravitational constant and the Earth's density.