Final answer:
Elias is engaging in a persuasion technique known as agreeing for instrumental purposes.
Step-by-step explanation:
Elias is engaging in a persuasion technique known as agreeing for instrumental purposes. This means that Elias is agreeing with his boss about the weather in order to achieve a specific goal, which in this case is to increase his chances of getting a raise. Elias is using this technique as a form of flattery to establish rapport with his boss and create a positive impression.