Kelly had read that German meteorologist Alfred Wegener further developed a hypothesis about the continents and their positions.

What was the most complete hypothesis that Alfred Wegener made?

A. All the continents would slowly drift together over millions of years.
B. All the continents would fit together like a giant world jigsaw puzzle.
C. All the continents were once grouped together and had drifted apart over time.
D. All the continents were slowly rotating around the world in continental drift.

Wegener's theory of continental drift was certainly groundbreaking when revealed, but it was also considered preposterous by the geologic community at the time since the general consensus was the the entire planet was contracting.

Wegener proposed that the continents had at one time been grouped together and that over time they had moved apart. Although he did clarify how exactly this happened, he did provide multiple pieces of evidence that made continental drift at least plausible.

It was not until the discovery of plate tectonics that some of Wegener's ideas were proven to be true.