An aim of the present invention is to provide a technique for allowing a user to easily grasp an estimation result of an object. A display method for displaying answers to a plurality of questions to estimate an approach of a company to an environment, the method comprising: preparing a plurality of leaf areas in which an answer result to each of the questions is displayed respectively, such that the leaf areas become a tree as a whole; obtaining answer indicating an attainment degree for each of the questions; and displaying a result by color-coding the leaf area corresponding to each of the questions with different colors such that the attainment degree of the answer is understood. The display apparatus prepay the leaf areas and displays the result, such that, the higher the estimation of the approach of the company to the environment is, the more green leaves the tree has.