9. Which refers to the study of human populations, including their size, growth, density, and distribution, and statistics? a. situation c. demography b. psychology d. topography 10. Which is the scientific study of the human mind, mental states, and human behavior? a. psychology c. situation b. demography d. physiology 11. Which refers to the capability to adjust or manipulate the resonance and timbre of the vocal tone? a: Articulation c. Stage Presence b. Modulation d. Facial Expression e. Audience Rapport 12. What is the ability to "own" the stage, of the Speaker being able to fill the space and project his/her personality to the audience? a. Articulation c. Stage Presence b. Modulation d. Facial Expression e. Audience Rapport 13. What is the most important tool for establishing a connection with the listeners? a. Articulation c. Stage Presence b. Modulation d. Facial Expression e. Audience Rapport 14. Which is the way of pronouncing the words and speaking with clear diction that effectively transmits the message of the speaker? a. Articulation c. Stage Presence b. Modulation d. Facial Expression e. Audience Rapport 15. Which occurs when the message of any speech is reinforced, clarified, and complemented by Nonverbal Communication? a. Articulation c. Stage Presence b. Modulation d. Facial Expression e. Audience Rapport​