Final answer:
Luffy's crew in 'One Piece' is called (A) The Straw Hat Pirates, a group led by Monkey D. Luffy that aims to conquer the Grand Line and find the treasure known as One Piece.
Step-by-step explanation:
The name of Luffy's crew in the popular anime and manga series One Piece is A. The Straw Hat Pirates. This group is famously led by Monkey D. Luffy, whose ultimate goal is to find the legendary treasure known as One Piece and become the Pirate King.
The Straw Hat Pirates are named after Luffy's signature straw hat, which is a symbol of his promise to a great pirate named Shanks. This crew is known for their strong bonds, unique members, and their adventurous journey through the Grand Line.