Read the excerpt from the dark game to spy stories from visible ink to see a moles armed with invisible ink a cipher system and passion to end the war and preserve the union Elizabeth van lose Butler eyes and ears and confident capital city truth be told however she became much more than running a network of agents couriers and safe houses that were active during the Civil War which word best of the passage curious nostalgic triumph or
Respectful

D) Respectful.

Explanation:

The tone of a text or sentence is the author's or speaker's attitude towards the audience, the subject or even the characters of the text. There are many different kinds of tones, like: positive, negative, objective, sad, angry, etc. In the given excerpt from "The Dark Game: True Spy Stories from Invisible Ink to CIA Moles" we can see that the speaker uses a respectful tone when talking about Elizabeth Van Lew.

Hope I helped answer the question:)

a source card is mage during research to tell the facts about the source one is using.

this would be in the imperative mood. it is a category of verb forms that are used to express orders,instructions,commands or requests.