Answer:
She was engaging in Demographic audience analysis.
Explanation:
Demographic audience analysis deals with the identification of an audience according to education level, religion, race, ethnicity, culture and gender with a view to structuring speech in ways that connect with their attitudes, level of understanding, beliefs and interests.
In preparing her speech about organic foods, Amanda not only analysed her audience according to demographics but ensured that the speech would be adapted to their cultural background, gender and age. What Amanda did is a good example of demographic audience analysis.