gas engine was invented by :

The correct answer is (a) Diesel.

Diesel engines are internal combustion engines that use compression ignition. They are named after their inventor, Rudolf Diesel, who patented the design in 1892. Diesel engines are used in a variety of applications, including trucks, buses, locomotives, and ships.

Davy invented the electric light bulb in 1802. Daimler invented the internal combustion engine in 1885. Charles is a common name, and it is not possible to identify which Charles you are referring to without more information.