Final answer:
The suitable brickwork bond for lightly loaded boundary walls is Stretcher bond, where all the bricks are laid as stretchers only, with no headers.
Step-by-step explanation:
The suitable brickwork bond for lightly loaded boundary walls, characterized by a sequence of a header and three stretchers in each course, with each header being centered over a header in alternate courses, is Stretcher bond. In stretcher bond, all the bricks are laid as stretchers only, with no headers. This creates a stronger and more stable wall with better load-bearing capacity.