Final answer:
Malocclusion refers to improper teeth alignment when the jaw is closed, which can lead to health issues like difficulty chewing but is not related to swallowing, bile duct occlusions, constipation, or indigestion.
Step-by-step explanation:
Malocclusion is a term used in dentistry referring to the condition where the alignment of the teeth is incorrect when the jaws are closed. This issue can lead to a variety of health concerns ranging from difficulty in chewing food properly to jaw pain and increased wear and tear on the teeth. The alignment and interaction of the teeth are essential not only for a healthy mouth but also for overall well-being. It doesn't relate to the swallowing process, bile duct occlusion, constipation, or indigestion.
Therefore, the correct answer to the question is 'C) the teeth do not meet properly when the mouth is closed.'