Which of the following operating activities is supported by digital mode software in the WSJT-X software suite?
Earth-Moon-Earth
Weak signal propagation beacons
Meteor scatter
All these choices are correct✓الإجابة الصحيحة
الشرح
The WSJT-X suite includes purpose-built modes for each of these weak-signal paths: JT65 and Q65 for Earth-Moon-Earth, WSPR for propagation beacons, and MSK144 for the very short reflections of meteor scatter. All three are supported, so the combined choice is correct.