in the first quation i need explanation about these segments

( mearurable - profitable - accessible - relevant )

Review questions 1 What are the criteria for effective segmentation? 2 What variables do you think are most suitable for segmenting the market for credit cards? 3 What are the advantages of a differentiated approach to market targeting? 4 When will focused market targeting be most appropriate? 5 What factors should be taken into account when trying to develop a competitive position? 6 Suggest the type of ways in which the concept of segment-of-one can be applied when marketing to existing customers