Question

1. what caused pangea to break apart?

a giant meteor.
volcanic activity.
plate tectonics.
gradual erosion.

Explanation:

Pangaea broke apart due to plate tectonics. Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle. A giant meteor is more associated with events like the extinction of dinosaurs. Volcanic activity is a result of plate movements in many cases but not the primary cause of Pangaea's breakup. Gradual erosion affects the surface but not the large - scale continental separation like Pangaea's breakup.

Answer:

C. Plate tectonics.