The answer is B) 6 because it doesn't have anything to do with the phalanx, which is what the passage mainly focuses on.
Explanation:
d party
due to for
A prepositional phrase is a group of words consisting of a preposition, its object, and any words that modify the object. Most of the time, a prepositional phrase modifies a verb or a noun. At a minimum, a prepositional phrase consists of one preposition and the object it governs.