The correct answer is B) the direction of twist in the strands. The "lay" of a line refers to the direction of twist in the strands that make up the line. This is an important characteristic to know, as it affects how the line performs and handles. The lay of a line is typically described as either "right-laid" or "left-laid", indicating the direction the strands are twisted. The other answer choices are incorrect because they do not accurately describe the meaning of "lay" in the context of a line or rope. The location of stowage (A), the manner of coiling (C), and the way the line is rigged (D) are all separate characteristics, distinct from the lay of the line.