Canadian Citizenship Practice Test 2025

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Master the Canadian Citizenship Test! With tailored quizzes, real test simulations, detailed explanations, and expert tips. With over 500 questions. Updated for 2025

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What did Reginald Fessenden invent?

The first cardiac pacemaker
The telephone
The radio
The snowmobile

The correct answer is: The radio

Reginald Fessenden is known for his role in developing the first working radio transmitter, which laid the foundation for modern radio technology. He did not invent the cardiac pacemaker (that was Wilson Greatbatch), the telephone (Alexander Graham Bell), or the snowmobile (Joseph-Armand Bombardier). He was also involved in the development of other technologies such as sonar and wireless telephony, but his most significant contribution was in the field of radio.