Question

In the early part of the 20th century, a German scientist, Alfred Wegener, proposed the theory of:

a) Continental drift
b) Plate tectonics
c) Lithosphere
d) Geologic boundaries

Answer 1

The theory proposed by Alfred Wegener in the early 20th century is continental drift, where the continents were once joined together and have since drifted apart.

Step-by-step explanation:

The theory that the question is referring to is continental drift, option a).

In the early 20th century, German scientist Alfred Wegener proposed the theory of continental drift. This theory suggests that the continents were once joined together in a supercontinent called Pangaea, and over time, they drifted apart to their current positions.

Wegener supported his theory with several pieces of evidence, including the fit of the continents like puzzle pieces, the presence of matching fossils and mountain ranges on separate continents, and paleoclimate evidence.