Marion was asked to come up with a new slogan for her school's psychology club. At first thought, nothing came to mind. Then suddenly, 'Aha!' The perfect slogan became apparent to Marion, but she was not consciously aware of how she figured it out. Your 'aha!' moment is called

• A. trial and error.
• B. insight.
• C. an algorithmic solution.
• D. an availability heuristic.