The correct answer is B: Try to find a path that reflects signals to the repeater. When buildings or obstructions block the direct line-of-sight path to a repeater, you can use a directional antenna to find a reflected path that bounces signals around the obstruction to reach the repeater. Radio signals can reflect off buildings, terrain, or other objects. By pointing your directional antenna in different directions, you might find a reflection path that gets your signal to the repeater even though the direct path is blocked. This is a common technique in urban areas where buildings block direct paths. You experiment with different antenna directions to find a reflection that works.