In a marketing plan where the primary objective is to create a positive feeling about the brand, such a marketing plan does not account to be specific and measurable. Therefore, the option D holds true.
Marketing plan can be referred to or considered as such a plan that is aimed at boosting and driving the sales of a company's products. This can be achieved by creating a positive feeling about the brand, however, such marketing plan does not define how will a positive image be created and how much positive their image is.
Therefore, the option D holds true regarding the significance of a marketing plan.
Learn more about marketing plan here:
https://brainly.com/question/1438675
#SPJ1