C. Convergent
Explanation:
When two plate boundaries collide, it causes earthquakes. The deepest and most powerful earthquakes occur at plate collision (or subduction) zones at convergent plate boundaries.
The elements that make up the earth are the main reason for life on earth. The elements include water as a component of life support; an atmosphere with a composition suitable for life; and the distance between the sun and the earth is neither too close nor too far away and also on earth has oxygen and gravity.
C. a delta. Because a delta is the only one of those choices to where it is formed at the mouth of a river
The prime meridian is 0 degrees longitude. As you go east from the prime meridian, the longitude increases to 180 degrees. As you go west from the prime meridian longitude increases to 180 degrees.
I know it might be too late, but I believe the answer is B) US research and design with mostly Asian production.