Sedimentary Basins

This appears to be a homework question...
However, we all must learn somewhere. Divergent boundaries are normally located in the middle of the ocean, where two plates are being dragged (primarily pulled, barely pushed) apart by tectonic forces. These are thin typically basaltic composition oceanic crust areas with minimal if any sedimentary deposition. Convergent plate boundaries that develop sedimentary basins are where oceanic plates are being subducted under continental plates. This convergent boundary may create orogenesis (effectively mountain building). After the mountains are built they will eventually be weathered and worn back down to flat. The deposition from the oceanward side of the mountain chain will be into the convergent margin or the basin left behind it. Therefore the largest and most important sedimentary deposits will likely be at convergent margins. Transform margins are unlikely to accumulate significant depth sedimentary deposits unless they are beside very rapidly eroding mountain belts of alternate or previous origin to the transform boundary.