A) True. Mud is one of the three types of soil, along with sand and clay.
24) B) Chemical. This type of weathering occurs when rocks weaken and break down due to changes in the composition of the rock, often through chemical reactions. Mechanical weathering (option A) refers to the physical breakdown of rocks without changing their composition. Permeable (option C) refers to the ability of a material to allow the flow of fluids, and it is not directly related to weathering. Physical (option D) is a broad term that can encompass both mechanical and chemical processes, so it is not specific to the type of weathering described in the question.