What elements of a speech should be adapted based on audience analysis?

What elements of a speech should be adapted based on audience analysis? It is important to know your audience and who you are speaking to when giving a speech so that it is easier to adapt. You need to understand if your audience is casually listening, needing to be captivated or concerned about the topic. Make sure to know the audiences demographics such as value, age, gender etc to speak to them in a way they can connect with. 

Afine-grained igneous rock forms as a result of slow cooling.

The republican party