Which word would best replace the word nervous without changing the overall meaning of the passage

The excerpt is from a longer essay on huckleberry finn by mark twain. what kind of support is used to develop the writer's main idea regarding how twain brought his characters to life?

In 150 words, explain what northup (in twelve years a slave) could have done to prevent being kidnapped by hamilton and brown.

What is edwin's character inferences in dust by charles grayson? ?