Pls, Help the first time It was incorrect. Which of the following theories is supported by the discovery of magnetized rocks that do not match with Earth's poles?

Select one:
a. Continental Drift Theory
b. Mid-Atlantic Ridge Theory
c. Pangea Theory
d. Theory of Plate Tectonics

also, it said it was incorrect for A so...

Which of the following statements best characterizes changes to agriculture in the united states since 1900? a. increased mechanization has reduced the need for labor.b. increased mechanization has increased the need for water, thereby increasing the need for labor.increased mechanization has increased the use of land, thereby increasing the need for labor.d. increased mechanization has increased food production, thereby increasing the need for labor. select the best answer from the choices provided.

What factors result in the formation of landscapes

What is the difference between a tundra and a taiga?