appeared several times in the text and supports the theme. B. The device of metaphor, which occurs throughout the text and does support the
expedition = "a journey or voyage undertaken by a group of people with a particular purpose, especially that of exploration, scientific research, or war" - Google
This definition applies to the context in which "expedition" is used in the sentence.
expedition = b.) journey
In The Crucible, certainty can be dangerous as demonstrated by the character of Abigail.
She accused Proctor's wife of being a witch. She testified that she saw the spirit of Proctor's wife and it stabbed her. Even though she lied, her certainty in front of the jury and the towns people convince them that what she said is true and that Proctor's wife is a witch that must be burned to death.