Final answer:
The statement about a talus slope having a characteristic angle of repose of about 35 degrees is true. The angle of repose refers to the maximum stable angle for loose material, and a talus slope's repose angle is usually between 35 to 40 degrees, depending on the properties of the rock debris.
Step-by-step explanation:
Regarding the statement about a talus slope having a characteristic angle of repose of about 35 degrees, the answer is A. True. The angle of repose refers to the steepest angle at which a sloping surface formed of a particular loose material is stable. This angle is determined by the properties of the material, including its grain size and shape, as well as moisture content. For a talus slope, which is composed of broken rock fragments at the base of a cliff or mountain, the angle of repose typically ranges from about 35 to 40 degrees. This angle allows the materials to be stable and rest without sliding down. The varying angles of repose for different materials affects the incline of the slopes they form, such as the sloping strata in continental margins, the smoothness of inclined planes, and the movement of a marble rolling down a slope.