According to the comparison table, what is the minimum mass threshold (in solar masses) for a stellar remnant to be classified as a Black Hole?

A mass greater than 3 solar masses

Stellar remnants occupy distinct mass categories based on the outcome of the core collapse. The table illustrates these dividing lines clearly. A White Dwarf is supported by electron degeneracy pressure and has a maximum mass of about 1.4 solar masses. A Neutron Star exists in the intermediate band, supported by neutron degeneracy pressure, typically ranging from 1.4 up to approximately 3 solar masses. If the mass of the collapsing core exceeds this upper limit of about 3 solar masses, the gravitational force is so overwhelming that even neutron degeneracy pressure cannot halt the implosion. In this scenario, the collapse continues indefinitely, resulting in the formation of a Black Hole, whose remnant mass is defined as being greater than 3 solar masses.