'Deadalusand his son Icarus' were imprisoned in a great maze
a. object of a preposition
b. complete predicate
c. complete subject
d. independent clause
a) in a great maze is a prepositional phrase, maze is its object.
b) were imprisoned in a great maze is the complete predicate.
c) Deadalus and his son Icarus is the complete subject.
d) Deadalus and his son Icarus were imprisoned is an independent clause, in a great maze could also be part of that clause.