Which of these is the best example of interconnected technological systems? 1A person works up a sweat after going for a run and then cools off by taking a shower. 2A person rides a bicycle over a nail in the road, which causes the bicycle's tire to burst. 3A person increases the heat setting on a thermostat, which sends a signal that turns on the furnace. 4A person places several different fruits into a blender and then turns on the blender to make a fruit smoothie.