The correct answer is B. Trust, competence and ethos.
The speaker will inspire credibility from the audience when it perceives his or her character and their ethos concerning the topic they are presenting. If they know it really well, they will speak with authority, which will engender trust. Their competence is manifested and it's easier for the audience believe and received what it's being conveyed.
The size and growth rate of the human population has changed in the past 200 years because reproduction rates have increased due to the large number of people in the world
Answer:
America and Mexico tried to purchase California
The Middle East is hot and dry, however winters could contain mild rain. Keep in mind, most of the Middle East are deserts, so it would be hot and dry most of the year.