When planning a marketing or sales message, which is the first step of the process? identifying the product or service to sell analyzing the competition identifying key selling points assessing audience needs anticipating objections?

The correct answer is assessing audience needs.
The first thing you need to think about when you want to sell a product is your audience - what it needs, what it wants, how much it is willing to pay for your product, etc. It's no different when it comes to marketing or sales messages - you need to evaluate your audience which will be the possible consumer of your product.

I’d put a, table of contents.