The correct answer is A: The signal experiences less loss compared to multi-hop propagation, which uses Earth as a reflector. What is the effect of chordal-hop propagation is that the signal experiences less loss compared to multi-hop propagation, which uses Earth as a reflector. Chordal-hop skips ground reflections, reducing loss. For amateur radio operators, this is important for understanding propagation efficiency. Understanding this helps when operating HF.