Answer: Public Relations
Explanation: The elements of a promotional marketing mix are the resources an organisation engages in its marketing promotion. They are:
Advertising, public relations, sales promotion, direct marketing and personal selling.
The above listed elements have there unique effect on the sales if an organisation.
Advertising is used to create an awareness of the product to the consumer using all forms of advertising such as radio jingle television advert, billboards etc.
Public relations is used to find out the effect of the products in the market and also to get feedbacks from consumer which will enable mgt to plan on ways to correct any issue observed.
Sales promotions are ways of giving to the consumers fee products as rewards for loyalty
Direct marketing is the use of marketing officers that will speak to consumers personally and try convincing them to try the products
Personal selling is the act of selling the products one on one to customers