Final answer:
New crust is created at divergent boundaries where plates are moving in opposite directions. In these boundaries, plates are moving away from each other, allowing molten rock to well up from below and solidify into new crust.
Step-by-step explanation:
New crust is created at divergent boundaries where plates are moving in opposite directions. In these boundaries, plates are moving away from each other, allowing molten rock to well up from below and solidify into new crust. This process occurs primarily along mid-ocean ridges, such as the Mid-Atlantic Ridge.