The correct answer is D. The American Radio Relay League (ARRL) was founded in 1914.
The ARRL is the national association for amateur radio in the United States. It is the largest organization of amateur radio enthusiasts in the world, with over 1.7 million members. The ARRL provides a wide range of services to its members, including technical information, training, and advocacy. It also publishes several magazines and books on amateur radio.
The ARRL was founded in 1914 by Hiram Percy Maxim, who was a pioneer in the development of amateur radio. The ARRL’s mission is to promote and protect the interests of amateur radio. It does this by lobbying for favorable legislation, providing technical information and training, and organizing amateur radio events.
The ARRL is a valuable resource for amateur radio enthusiasts. It provides a wealth of information and support, and it helps to promote the hobby of amateur radio.
Here is a brief explanation of each option:
- Option A: The 1940s. This is incorrect because the ARRL was founded in 1914, not the 1940s.
- Option B: The 1930s. This is incorrect because the ARRL was founded in 1914, not the 1930s.
- Option C: The 1920s. This is incorrect because the ARRL was founded in 1914, not the 1920s.
- Option D: The 1910s. This is correct because the ARRL was founded in 1914.