What is the wadati-benioff zone?

it is the planar zone of seismicity increasing with depth with increased distance from the trench.

it is the planar zone of seismicity increasing with depth closest to the mid ocean ridge system.

it is the planar zone of seismicity showing the vertical faulting along transform plate boundaries.

it is the planar zone of seismicity increasing with depth closest to the trench.

It is the planar zone of seismicity increasing with depth with increased distance from the trench.

Explanation:

Wadati - Benioff zone -

The planar zone of the seismicity corresponding  to the down - going slab in the subduction region .

The term was given by Hugo Benioff  and Kiyoo Wadati , hence is named after these two seismologists .

It is the planar zone of the seismicity increasing with depth with the increased distance from the trench .