Final answer:
Thomas Edison is the inventor in the list provided, specifically known for inventing the incandescent light bulb. Electrical engineers would have been key to his inventions. The invention of the radio is attributed to Guglielmo Marconi.
Step-by-step explanation:
The invention question asks to select the discoverers who created an invention. From the list provided, Thomas Alva Edison stands out as an inventor with over a thousand patents to his name, including the invention of the incandescent light bulb in 1879. Electrical engineers would have played a crucial role in the development of Edison's inventions, particularly with the application of principles from mathematics and science such as circuit theory and materials science.
As for the STEM discoverers mentioned, the figures like Pythagoras and Euclid were monumental in the field of mathematics, while Gauss' contributions span both mathematics and physics; however, neither of these individuals is known for creating an invention in the sense of a tangible device. Similarly, Hawking made significant contributions to theoretical physics but did not invent a physical product. Regarding the answer to who the invention of the radio is attributed to, the answer is c. Guglielmo Marconi.