at which point is crust neither created nor destroyed?\no island chain\no mid - ocean ridge\no divergent…

Brief Explanations:

At transform boundaries, tectonic plates slide past each other horizontally. There is no creation or destruction of crust as occurs at divergent (crust - creation) and convergent (crust - destruction) boundaries. Island chains are often associated with hot - spots or subduction zones, mid - ocean ridges are sites of crust creation, and divergent boundaries are where new crust is formed.

Answer:

transform boundary