The correct answer is ASK which denotes Amplitude Shift Keying. This is essentially a type of amplitude modulation which represents the binary data that comes varied forms right in the amplitude of a signal.
Now the reason why It is the most susceptible technique to noise is due to the fact that between frequency, phase & amplitude, amplitude is the one that is most susceptible to being affected by noise when compared to the other two.
Desktop Publishing software and Multimedia software is not used for storing data, so it can't be that. Spreadsheet software stores data in cells, while Database software stores data in tables.
