The secret to effective sales is to have a unique selling proposition.

good personality.

memorized pitch.

fantastic product.

unique selling proposition.

Explanation:

Marketing can be defined as the process of developing promotional techniques and sales strategies by a firm, so as to enhance the availability of goods and services to meet the needs of the end users or consumers through advertising and market research. Thus, it comprises of all the activities such as, identifying, anticipating set of medium and processes for creating, promoting, delivering, and exchanging goods and services that has value for customers. It typically, involves understanding customer needs, building and maintaining healthy relationships with them in order to scale up your business.

Generally, the secret to effective sales is to have a unique selling proposition that makes consumers patronize you.

answer; ///(d); determining who competes most closely   with whom evaluating whether industry driving forces and competitive pressure favor some strategic groups and hurt others, and ascertaining whether the profit potential of different strategic groups varies due to the strengths and weaknesses in each groups respective market positions;