An article states: 'Company A's employees, after participating in a new team-building retreat, reported a 15% increase in perceived team cohesion compared to their satisfaction levels prior to the retreat.' Which conclusion is least justified based solely on this statement?

The correct answer to the question "An article states: 'Company A's employees, after participating in a new team-building retreat, reported a 15% increase in perceived team cohesion compared to their satisfaction levels prior to the retreat.' Which conclusion is least justified based solely on this statement?" is Option B: Company A's team cohesion objectively improved by 15% after the retreat..

The other options — A) The team-building retreat was perceived by employees as having a positive effect on team cohesion., C) Employee satisfaction levels were measured both before and after the retreat., D) There was some form of measurement or reporting used to quantify team cohesion. — are incorrect for this GMAT Exam Prep question. As explained above: The statement explicitly refers to a 'perceived' increase in cohesion. One cannot conclude an 'objective' improvement from a subjective perception without further objective data.