Which frequency modulation technique is commonly used in digital communication for its resilience to noise and interference?Amplitude Shift Keying (ASK)Frequency Shift Keying (FSK)Phase Shift Keying (PSK)Quadrature Amplitude Modulation (QAM)

The frequency modulation technique commonly used in digital communication for its resilience to noise and interference is Phase Shift Keying (PSK).

Here's a step-by-step explanation:

1. In digital communication, there are several modulation techniques used to transmit data. These include Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK), Phase Shift Keying (PSK), and Quadrature Amplitude Modulation (QAM).

2. ASK modulates the amplitude of a signal to represent digital data. It's simple but susceptible to noise and interference.

3. FSK modulates the frequency of a signal to represent digital data. It's more resistant to error than ASK but still not the most resilient.

4. PSK modulates the phase of a signal to represent digital data. It's more complex but offers better resilience to noise and interference, making it commonly used in digital communication.

5. QAM is a combination of ASK and PSK. It's more efficient but also more complex and requires a high Signal to Noise Ratio (SNR).

So, considering the resilience to noise and interference, PSK is the most commonly used frequency modulation technique in digital communication.