Question

at which point is crust neither created nor destroyed?
island chain
mid - ocean ridge
divergent boundary
transform boundary

Explanation:

At a transform boundary, tectonic plates slide past each other horizontally. There is no creation or destruction of crust as plates move in this way. In contrast, new crust is created at mid - ocean ridges (divergent boundaries) and crust is destroyed at convergent boundaries. Island chains are often formed due to volcanic activity related to plate movements but are not locations where crust balance is neutral.

Answer:

D. transform boundary