Well, a prepositional phrase must include a preposition and object of preposition. "After a heated discussion" includes a preposition (After) and an object of preposition (Discussion) so the answer would be A.
Answer:
complex, since it contains a prepositional phrase
30 hands will be shaked because each Person shakes 5 hands and 5x6=30
Answer: 30
I believe it's D). A creature with tentacles and a round body.