Final answer:
The lesion is in the left hemisphere, causing symptoms of left hemiplegia, hemisensory loss, left homonymous hemianopsia, and apraxia.
Step-by-step explanation:
The left hemisphere has been affected by the lesion in this case. The symptoms of left hemiplegia/hemisensory loss and left homonymous hemianopsia indicate damage to the right side of the brain. These symptoms are often caused by a stroke or injury affecting the blood supply to the brain. The presence of apraxia suggests damage to the parietal lobe, which is responsible for motor planning and coordination.