The various different possible solutions to a problem may be subjective or objective as is demonstrated by the dictionary definitions of these words:

Objective: 1. external to the mind 2. impartial 3. thing or place aimed at objectivity.

Subjective: 1. based on personal feelings, not impartial 2. of the self 3. existing in the mind 4. displaying artist's individuality.

Decision making is the process of choosing one of the possible objective or subjective solutions.