**Core Concept**
The posterior column of the spinal cord is responsible for transmitting sensory information related to proprioception, vibration, and fine touch. This column consists of the fasciculus gracilis and fasciculus cuneatus, which convey information from the lower and upper body, respectively.

**Why the Correct Answer is Right**
Lesions affecting the posterior column can lead to a range of clinical symptoms, primarily affecting proprioception and fine motor coordination. The fasciculus gracilis and fasciculus cuneatus transmit sensory information to the dorsal column nuclei in the medulla, which then relay this information to the ventral posterior nucleus of the thalamus and ultimately to the primary somatosensory cortex. Damage to these pathways can result in difficulties with balance, coordination, and fine motor movements.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided.
**Option B:** This option is not provided.
**Option C:** This option is not provided.

**Clinical Pearl / High-Yield Fact**
Damage to the posterior column can also lead to a loss of vibratory sense, which can be assessed clinically by having the patient identify the frequency of a vibrating tuning fork.

**Correct Answer: D. Impaired proprioception and fine motor coordination.**