No One Could Turn Around a Failing Restaurant as Expertly

No one could turn around a failing restaurant as expertly as Gordon, whose experience and cadre of trained professionals was available at a moment's notice should his services be needed. This ability, some might call it a gift, was developed to such a level that other restaurant consultants were unable to match his results. This ability is best described as his:

A) business strategy.
B) core competency.
C) mission statement.
D) operations and supply chain strategy.