Answer:
People are more prone to believe and have an open mind towards new things when they are enjoyable and gratifying.
Therefore, bringing up tragic events, emotionally disturbing or distressing subjects might reduce significantly someone's disposition or willingness; the same would happen if the presentation highlights or forecasts faulty outcomes and dreadful scenarios instead of optimism and successful outputs boosting the audience's faith and assurance about the product.
Thereby (A.) & (D.) should NOT be emphasized. in a business setting.
Explanation:
