Sarita got admission in Nadir Engineering College. After two to three months, she observed that the students of the college were facing problems in washing and ironing of clothes due to shortage of time. Sarita sensed the opportunity, analysed it and synthesised it to identify an opening. She suggested to her cousin, Hitesh to start a laundry service for hostel students. Soon, this service became popular, not only among the hostel students, but also among the nearby residents.'Ability to perceive and preserve basic ideas which could be used commercially' was the factor involved in sensing this opportunity. The source which led to the emergence of this basic idea was: