The marketing concept is best defined as: Select one: a. a philosophy stating that an organisation should try to satisfy customers' needs through a coordinated set of activities that allows the organisation to achieve its goals. b. a philosophy stating that an organisation should attempt to accomplish its goals with no regard for the needs of customers. c. a second definition of marketing. d. the inclusion of marketing activities in the activities of an organisation. e. the performance of business activities that direct the flow of goods and services from producer to customer or user