...................... was awarded the Nobel Prize in Physics in 1909 along with Karl Ferdinand Braun for the development of practical wireless telegraphy.
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Correct answer: D
Explanation
The correct answer is option 4 i.e. Guglielmo Marconi.
The 1909 Nobel Prize in Physics was awarded jointly to Guglielmo Marconi and Karl Ferdinand Braun for their advancements in wireless telegraphy. Marconi was honored for his pioneering work and practical applications in the field, while Braun was recognized for his research contributions, notably his invention of the cathode-ray oscilloscope.