1. Who first proposed the theory of continental drift? A. Albert Einstein B. Alfred Wegener C. Harry Hess D. None of the above

The correct answer is B. Alfred Wegener.<br /><br />Alfred Wegener was a German meteorologist and geophysicist who first proposed the theory of continental drift in 1912. He suggested that the continents were once joined together as a single landmass and have since drifted apart over geological time. This theory was later supported by evidence from plate tectonics and led to the development of the modern theory of plate tectonics.