How do folds form? Folds are created when sedimentary layers are compressed.
Folds are created when two plate tectonics collide.
Folds are only created during earthquakes.
Folds are only created during a volcanic eruption

Folds are created when sedimentary layers are compressed.

Explanation:

Folds can be formed when sedimentary rocks are compressed usually by compressive stress.

Folds are not necessarily created when two plate collide. Their might not be enough compressive stress to allow for the formation of a fold.

Also, folds are not created by earthquakes because it is a brittle deformation.

Fold are not created during volcanic eruption.

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its temperature is increasing. this causes molecular vibrations to increase.