Question

which best describes how wedge basins form?
when two plates move apart, the weaker part of earths crust moves down at normal faults where sediments are deposited until a basin forms.
at the area where two bent plates slide past each other, a depression forms where sediments are deposited.
when two plates collide, the non - subducting plate scrapes the subducting plate and forms a depression where sediments gather.
at the area of a depression between two plates, sediments continue to get deposited and become compacted.

Explanation:

Wedge basins form when two tectonic plates collide. The non - subducting plate scrapes the subducting plate, creating a depression where sediments accumulate. The first option describes rift basins, the second describes strike - slip basins, and the fourth is a more general description of basin formation not specific to wedge basins.

Answer:

When two plates collide, the non - subducting plate scrapes the subducting plate and forms a depression where sediments gather.