In the sentence, "The gardeners had constructed a complicated labyrinth of pathways that led us through the hedges," the word "labyrinth" refers to a complex maze or structure of interconnected pathways. A synonym that best replaces "labyrinth" in this context is "maze."
Here's why "maze" is the most suitable synonym:
1. A maze is a complex network of paths or passages designed to confuse or challenge those navigating through it, just like a labyrinth.
2. Both mazes and labyrinths involve intricate pathways that can lead to confusion or getting lost.
3. The construction of pathways in the sentence implies a sense of complexity and confusion, characteristics shared by both mazes and labyrinths.
Therefore, in the given sentence, the word "maze" is the best replacement for "labyrinth" as it maintains the intended meaning of a complex network of pathways designed to lead people through a challenging or confusing journey.