Which sentence is using the colon correctly?

Read the excerpt how the grimm brothers saved the fairy tale. which idea does the author introduce first

Which sentence contains correct capitalization? in “the rime of the ancient mariner,” the albatross was initially an omen of good luck. in “the rime of the ancient mariner,” the albatross was initially an omen of good luck.

How is dr. lanyon characterized in the excerpt? as friendly as arrogant as wise as mournful