Answer: Inspirational appeal
Explanation: Hayden by appealing to facts rather than emotions and consequently putting together a detailed proposal showing sales, marketing research, cost-benefit analyses of potential product launch strategies, and other support data in order to get his boss's support is using the influence tactic known as inspirational appeal. Inspirational appeal is defined as a tactic that is designed to appeal to the target's (in this case Hayden's boss) values and ideals, thereby creating an emotional or attitudinal reaction.