The answer is: competitive advantage.
A competitive advantage is a set of unique features of a company and its products that are perceived by the people or companies the organization wishes to serve as significant and superior to those of the competition.
The other answer choices are not correct:
Synergistic benefit: This is a benefit that is created when two or more things work together to produce a result that is greater than the sum of its parts.
Superlative benefit: This is a benefit that is the highest or best of its kind.
Comparative perception: This is the way that people perceive one thing compared to another.
Superlative resource: This is a resource that is the highest or best of its kind.