A is 1. Each letter corresponds to what place they are in the alphabet
GPS- Global Positioning System, this is be found in cars
Google Maps- Finding the nearest Starbux, the map is generated by satellite data.
Phone calls and text messages- the signals go from your phone to the satellite and back down to whoever you're texting.
Hope this helps :)
Your answer would be D. As the circulatory system pumps oxygen rich blood through the body, and the respiratory system helps you to breath. Hope this helps!