Final answer:
The small compact roll best suited for 1½" and 1¾" attack lines is the high-flow nozzle attachment.
Step-by-step explanation:
The small compact roll best suited for 1½" and 1¾" attack lines is the A.
High-flow nozzle attachment. While all the options mentioned have their own uses in firefighting, a high-flow nozzle attachment would be the most suitable for efficiently controlling and directing the water flow from the attack lines, allowing firefighters to tackle the fire effectively.