Question

scientists recently discovered that rocks collected from the franklin mountains in west tests and rocks collected from mountains in eastern antarctica were exactly the same age. further research showed that the rocks were chemically and geologically the same and came from the same magma source. this discovery provides evidence of-- ocean currents coastal erosion glacial melting plate tectonics

Explanation:

The discovery of identical rocks (same age, chemistry, geology, magma source) from far - apart locations (Franklin Mountains, West Texas and eastern Antarctica) supports plate tectonics. Plate tectonics theory states that Earth's lithospheric plates move, and this can explain how rocks from once - connected landmasses (before plate movement separated them) ended up in distant places. Ocean currents deal with water movement, coastal erosion is about shoreline wear, and glacial melting is about ice - related processes, none of which explain this rock - matching across continents.

Answer:

D. plate tectonics