Why does oceanic crust subduct under continental crust?

Question

subduction zone with resulting volcano | Subduction zone, Subduction, Earth and space science

a
Oceanic crust is made of magnetic metals and are being attracted to the Core of the Earth.
b
Oceanic crust is denser than continental crust and therefore sinks with gravity
c
Oceanic crust moves slower than continental crust, so Continental crust overtakes it.
d
Continental crust are more porous, which allows it to absorb the water in the oceanic crust

Answer 1

The correct answer is:

b Oceanic crust is denser than continental crust and therefore sinks with gravity.

In subduction zones, the denser oceanic crust is forced beneath the lighter and thicker continental crust due to tectonic plate movements. This process leads to the formation of deep ocean trenches and can result in volcanic activity as the subducted oceanic plate melts and contributes to magma formation.