Final answer:
During the left sideband of the cervical spine, coupled right rotation occurs, and the inferior articular facets on the left glide anteriorly and cranially. Foraminal space decreases on the left side, potentially compressing the nerve root there. The option (C) is correct.
Step-by-step explanation:
When it comes to cervical spine left sidebend or lateral flexion, several biomechanical events occur. Typically, with left lateral flexion of the cervical spine, coupled right rotation will take place. This is described by Fryette's laws, where side bending is accompanied by rotation in the opposite direction for the cervical and lumbar regions when in a neutral position.
Additionally, in response to the left sideband, the inferior articular facets on the left side of the superior vertebral segment glide cranially and anteriorly. This can potentially lead to a reduction in the foraminal space on the ipsilateral side, meaning the left in this case. Therefore, if compression of a nerve root occurs, it is more likely on the side of the lateral flexion being the left side due to narrowing of the foraminal space where the nerve exits the spinal column. Therefore, option (C) is correct.