During his trip what two new thing did the narrator learn about honduras

Although the account is in good standing at this point in time. is this sentence incomplete or complete?

What is the best way to improve the conclusion? add a sentence to the ending that summarizes the writer’s topic. add a sentence to the middle that reflects on the writer’s experiences. revise the final sentence to have a different tone. revise the first sentence to state a future goal.

How might a reader find tables, charts, and graphs useful