Answer:
A map of Africa
Explanation:
Including a map of Africa with this text would provide the best support for the details in the excerpt. In this text, we learn about the journey that Livingstone was going to undergo in Africa. Livingstone was going to explore the East side of the continent, and travel 260 miles upriver to the town of Tete. The reader would most benefit from a map in which he could trace Livingstone's journey.
I think that the answer to <em>"What could Mrs. Louis do next to be an effective participant in this discussion?"</em> is <em>"C"</em> or <em>"D"</em> which is......
<em>"C." "Move on to the next topic of conversation to keep the discussion on track
."</em>
<em>"D." "Challenge the validity of the report by questioning Mr. Hollembeak’s research methods."</em>
It’s the second one, incompatible