The correct answer is A) Robotic arms used aboard the ISS are now used in delicate surgeries on Earth.
The way in that technology used aboard the International Space Station has benefited humans back on Earth is the following: "Robotic arms used aboard the ISS are now used in delicate surgeries on Earth."
Technology has changed dramatically how we do things here on earth. The International Space Station is stationed in a low orbit of the earth. Astronauts live there as part of an international space project between, the United States, Canada, Russia, Europe, and Japan. Very experienced and capable scientists work in research and developing new space technologies that had impacted the way we do things here on earth as is the case of the robotic arms used aboard the ISS that are now used in delicate surgeries on Earth to save lives.