Chapter 27, Problem 6RAT

To determine

The correct option for the statement “Subduction occurs as a result of”.

Answer to Problem 6RAT

Amnswer:

The correct option for the statement “Subduction occurs as a result of” is option (a).

Explanation of Solution

The subduction is the process in which one tectonic plate bends and other tectonic plate descends beneath another plate at convergent boundary.

The subduction occurs due to the pulling of the older and denser lithosphere downward due to the effect of gravity.

The subduction is the downward phenomenon, so the horizontal plate accommodation does not produce subduction. The upwelling of hot mantle material produces a structure in an upward direction, so subduction does not occur. The subduction does not need lubrication, so the lubrication from the generation of andesitic magma does not produce subduction.

Conclusion:

Therefore, the correct option for the statement “Subduction occurs as a result of” is option (a).