The correct answer is: A. Flemish bond.
Flemish bond is a type of brick masonry that contains alternate courses of stretchers and headers. Stretchers are bricks laid so that their long sides are exposed, while headers are bricks laid so that their short sides are exposed. This type of bond is strong and provides good drainage.
English bond is a type of brick masonry that contains courses of stretchers and headers, but the headers are laid in every other course. This type of bond is not as strong as Flemish bond, but it is easier to build.
Stretcher bond is a type of brick masonry that contains only stretchers. This type of bond is the weakest, but it is the easiest to build.
Header bond is a type of brick masonry that contains only headers. This type of bond is the strongest, but it is the most difficult to build.