Interpret what alfred wegener stated in his theory of continental drift

Not sure I need help with this one too

Wegener proposed the continental drift theory, and provided scientific evidences for such, but couldn't explain the mechanism or processes behind the movement of continents. It wasn't until the mid-twentieth century with the discovery of the Mid-Atlantic Ridge that the processes causing plate movements began to be understood and led to the science of plate tectonics.

Active transport. now that i answered your question i wish you can me