Which phenomenon is NEVER a consequence of a supernova explosion?

Question

Quizplus · Accepted Answer

The formation of a planetary nebula is typically a consequence of the death of a low-mass star, where it sheds its outer layers to form a glowing cloud around the leftover core. In contrast, a supernova explosion is the result of the death of a massive star, and typically results in the formation of a neutron star or black hole, as well as the dispersal of heavy elements and energy into interstellar space. However, the other three phenomena listed (star formation triggered by shock waves, condensation into a neutron star, and generation of neutrino emissions) can all be consequences of a supernova explosion.

Which Phenomenon Is NEVER a Consequence of a Supernova Explosion