The correct answer is: B. Course rubble masonry.
Course rubble masonry is a type of stone masonry in which stones of
the same height are laid in layers. The stones are typically irregular in shape and size, but they are laid in a regular pattern to create a strong and stable wall. Course rubble masonry is often used in foundations and other load-bearing walls.Random rubble masonry is a type of stone masonry in which stones of various shapes and sizes are laid without any regular pattern. The stones are typically held together with mortar, and the wall is not as strong or stable as course rubble masonry. Random rubble masonry is often used in decorative walls or walls that do not need to support a lot of weight.
Uncoursed rubble masonry is a type of stone masonry in which stones of various shapes and sizes are laid without any regular pattern or courses. The stones are typically held together with mortar, and the wall is not as strong or stable as course rubble masonry or random rubble masonry. Uncoursed rubble masonry is often used in retaining walls or walls that do not need to support a lot of weight.
Ashlar masonry is a type of stone
masonry in which stones are cut to a uniform shape and size. The stones are typically laid in a regular pattern to create a smooth, flat surface. Ashlar masonry is the strongest and most stable type of stone masonry, and it is often used in buildings and other structures that need to withstand a lot of weight.