Final answer:
Desmond is utilizing mind mapping to brainstorm and organize ideas for his speech, visually connecting related concepts to develop his presentation effectively.
Step-by-step explanation:
Desmond is using mind mapping as a brainstorming technique. By drawing a central circle with his initial idea and then creating additional circles connected with arrows to explore relationships between the words, he visualizes the connections and can further develop his speech topic. This technique helps in seeing how different ideas are linked, allowing for a more structured approach to organizing thoughts for a presentation or writing.