Question

letter d is pointing to a(n)
hot spot
ocean trench
back arc basin
ocean plateau
abyssal plain
island arc
passive continental margin
submarine canyon and fan
fracture zone
mid - ocean ridge

Explanation:

Ocean trenches are deep - narrow depressions in the ocean floor formed by subduction zones. The feature pointed to by D has the characteristic deep and narrow appearance typical of an ocean trench.

Answer:

Ocean trench