Correct response: C. An open motor skill is a motor skill performed in a dynamic or unpredictable environment. In games, open motor skills are externally paced and adjusted to accommodate constantly changing conditions, such as in response to the actions of teammates or opponents or the variable speed or direction of a moving ball (e.g., as in basketball, softball, or soccer). A closed motor skill is one that is internally paced and regularly performed in a predictable or stable environment (e.g. as in diving or gymnastics). Unlike the performer of an open motor skill, the performer of a closed motor skill does not have to respond to changing conditions (A). A repetitive skill (B) is continuous and cyclical in nature, with the follow through from one execution leading directly into the next repetition of the movements involved. A skill than can be performed in precisely the same way each time regardless of the context (D) would be considered a closed motor skill.