Chandler is the head of a pulp and fibre manufacturing company. Despite his keen interest in closing a deal with a distributor in a developing country, he is convinced of the emerging surveys that show a lack of demand for the company’s products. Hence, he decides to drop the project in spite of his personal interest. This shows that Chandler is:

Persistence is elucidated as the personality trait or behavior that continuously prevails despite terminating the stimulus that initiates it. Sensible persistence would be demonstrated as the trait in which an individual controls a specific behavior by discontinuing the initiating stimulus as it may act as an obstacle in the path of attainment of goals.

As per the given description, Chandler displays a 'sensibly persistent' behavior as he terminates his idea of 'developing a deal with developing country' despite his continuous/persistent interest in it. He sensibly keeps the 'outcomes of emerging surveys that reveal the lack of interest among the people there' which hints him a threat or obstacle in accomplishment of the future goals of his company. Therefore, his decision reflect that he is 'sensibly persistent.'