Who among the following transmitted first radio signal through air?

🧠 Explanation:

Guglielmo Marconi transmitted the first radio signal through air in the 1890s. Knowing this helps students and tech enthusiasts understand communication history. Marconi’s work is key for studying radio or technology in school. Learning this helps with projects or exploring inventions. It’s useful for science classes, making it relevant for understanding wireless tech. Knowing Marconi’s role helps students grasp radio’s impact, ensuring better comprehension for academic work or general knowledge about communication advancements and their influence on modern technology and connectivity.