A, he suspects that madeline is not truly deceased yet.
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
Superlative means the greatest form (or biggest form) so the answer is C. soonest
Answer: Level II intelligence is most prevalent among Asians, followed by Caucasians, then African Americans.