I would say tipped his hat because without it you need a word phrase or else the sentance wouldn't make sense.
Hope this helps! Happy Studying!
Answer: true
Explanation:
A compound predicate is made up of two or more verbs or verb phrases ... There are three types of subordinate clauses: adjective, adverb, and noun.
I think the correct answer could be A
Pierre Aronnax... <span>Professor Pierre Aronnax, a French </span>marine biologist<span> and narrator of the story, who happens to be in New York at the time, receives a last-minute invitation to join the expedition which he accepts.</span>