To be effective, what three qualities does a selling proposition in an advertising campaign need to have?

Selling Proposition

is a unique feature or benefit that makes a product or service stand out from its competitors, also known as a Unique Selling Proposition (USP).

Advertising Campaign

A series of coordinated advertisements with a unified theme or message aimed at promoting a product, service, or brand over a specific period.

Effective

Achieving the intended result or having an intended impact, often used to describe strategies, methods, or products.