The correct evolution is the production era-selling era-marketing era-relationship era
Explanation:
Evolution of marketing is the systematic way in which the marketing industry developed and hence the various developments and the modifications are systematically defined in each of the era
There are four major stages of development the product life cycle, the introduction, the growth and the maturity and finally the decline of the product. Philip Kotler is the founder of this modern method of marketing
The ionosphere reflects those waves
C: pie chart is the answer to it
