Answer:
Incremental benefit from buying outside
Step-by-step explanation:
A decision will always need one to consider qualitative and non-qualitative (also known as quantitative) effects of a decision before choosing the best alternative.
Qualitative factors are those effects of a decision that do not have a monetary measurement to it.
Quantitative factors are those effects of a decision that have a monetary measurement that can be calculated from it.
Incremental benefit from buying outside is the only option that is not qualitative as the increment is determined by comparing the cost of making Internally against the cost of purchasing outside from a supplier.