Given the question: Q: Of all the electromagnetic waves, which have the lowest frequencies? Read this paragraph and choose the correct option from the provided answers: On the left side of the electromagnetic spectrum diagram are radio waves and microwaves. Radio waves have the longest wavelengths and lowest frequencies of all electromagnetic waves. They also have the least amount of energy. Choices: - X-rays - ultraviolet rays - gamma rays - radio waves A:
The answer is:
radio waves