At which level of organisation behaviour does motivation, attitude, etc. affect the organisation behaviour?

Read the following passage and answer the following 3 questions.  Organizational behavior is the applied behavioral science of employee interactions and organizational processes within a business or work environment. It gives employees a clear idea of what to expect from their workplace culture and managers an idea of how that culture may help or hinder their employees. The application of psychological sciences in the workplace is used to better understand the individuals and hierarchy structures. Organizational behavior is important in running an efficient and successful business. Studying OB can result in better workplace communication, a more hospitable work environment, and better conflict resolution. This not only benefits the company itself and the managers but the employees as well.