ANSWER: C, the continents were at one time joined together.
REASONING: Alfred Wegener was the first person to propose the scientific theory of Continental Drift. Continental Drift is a theory that supposes all the continents were at one time joined together as one large land mass. The mechanisms of continental drift can be explained by Plate Tectonics.
The answer is D for your problem.
The combination of weathering and movement of the resulting sediments is called erosion. Lithification is the changing of sediments into rock. There are two processes involved in this change, compaction and cementation.
An example of a hypothesis leading to a new experiment is this: GALILEO HAD THE IDEA THAT OBJECTS OF DIFFERENT WEIGHT WILL FALL AT THE SAME SPEED. HE TESTED THIS BY DROPPING DIFFERENT BALLS OFF OF THE LEANING TOWER OF PISA.
A scientific hypothesis refers to a proposed explanation, which is made on the basis of limited evidence as a starting point for further investigations. A scientific hypothesis must be tested in order to determine whether it is true or not. Galileo had an idea that objects will different weights will fall at the same rate and he tested the hypothesis by dropping different weights from a height. By doing this, he found out that the hypothesis is right.