The opener for a sales message should be Select one: a. provocative, humorous or entertaining, and medium length (5-10 lines). b. appealing, informative, persuasive, conversational, and medium length (5-10 lines). c. entertaining or serious, focused, persuasive, and short (1-5 lines). d. stimulating, relevant, honest, and short (1-5 lines).

The correct answer is letter A

Explanation:  In that sense something that provokes is something that makes you think, something humorous and that entertains makes you think positively and also makes the environment lighter, something related to size is to facilitate things like handling and in relation to the visual. All of these components are the best when it comes to opener for a sales message.

i'll just take the points xd

the invasive species was introduced due to commercial purpouses, as there was a demand for fur clothes and hence, a business opportunity connected to this product. actually, it was when the nutrias scaped, causing harm to the us ecosystems when they acquired the status of invasive species. in this case they have caused an environmental problem, but it could have affected also economic interests or even human health.