The type of plate boundary where two plates slide past one another.

Transform boundary

Explanation:

The theory of plate tectonic states that the earth crust is divided into various tectonic plates and these plates are constantly moving by colliding, diverging or moving past each other.

Plate boundaries is where this plates either collide, diverge or move past each other. The type of boundary formed when tectonic plates slide past each other is known as a transform boundary.

A transform boundary is usually known for geologic features like Faults an example of the fault formed by transform boundary is San Andrea fault.

A transform fault boundary is the correct answer.