Final answer:
The frequency that WiFi uses is 2.4GHz, which is option D in the provided question. Wi-Fi also uses the 5GHz frequency band in the latest standards.
Step-by-step explanation:
WiFi operates at multiple frequency bands, with the most common being 2.4GHz and 5GHz. The specific answer to the question would be D. 2.4GHz, which is one of the primary frequencies designated for Wi-Fi use. The frequency of 2.45GHz in microwave ovens is indeed close to the 2.4GHz Wi-Fi frequency, leading to potential interference if the microwave isn't properly shielded. It is also important to note that new Wi-Fi standards also utilize the 5GHz band, which is less congested and allows for higher data throughput.WiFi uses a frequency of 2.4GHz (option D). The frequency of 2.45 GHz is close to the specific frequencies used for WiFi. Other technologies like 4G cellular telephone signals, GPS signals, and highway toll sensors operate at different frequencies within the radio-wave portion of the electromagnetic spectrum.