17. As Amanda analyzed the audience for her speech about organic foods, she focused on such things as their gender, age, and cultural background. In doing so, she was engaging in audience analysis.

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.

onto a large boat, and mark the water level that the boat sinks to. then, take the elephant out and put a bunch of marked weights onto the boat until it reaches the same water level. add up the masses of the weights to get the weight of the elephant.