A : water ions dissolve rock minerals
B : water freezes inside a rock, causing it to break
C : oxygen reacts with the chemicals in rock
D : rocks break from repeated exposure to the Sun's heat
I believe the correct answer from the choices listed above is option D. Frost wedging happens when rocks break from repeated exposure to the Sun's heat. It is caused by the repeated freeze-thaw cycle of water in extreme climates. Hope this answers the question.
