has a thriving business based on its reputation for high-quality work, honesty, and skilled employees. For continued long-term success, Hays's owner should a. concentrate on maintaining Hays's present core competencies. b. focus on developing Hays's future competitive advantages. c. place more emphasis on tangible resources which are less vulnerable to obsolescence than intangible resources. d. recognize that core competencies derived from human resources are more subject to becoming core rigidities than are core competencies based on other types of resources.