Final answer:
Damage to the left side of Isaiah's parietal lobe is most likely to cause sensory deficits on the right side of his body. Language and speech difficulties are also possible but typically related to damage in Broca's or Wernicke's areas.
Step-by-step explanation:
If Isaiah has damage to the LEFT side of his parietal lobe, it is true that a) He may experience sensory deficits on the right side of his body. This is because the left side of the brain controls the right side of the body and vice versa. The parietal lobe is involved in processing sensory information such as touch, pressure, and pain from the opposite side of the body.
Option b) He may have difficulty with language and speech is also possible, but more commonly associated with damage to specific areas of the left hemisphere such as Broca's or Wernicke's areas, and not as directly related to parietal lobe damage.
Option c) and d) are not primarily associated with damage to the parietal lobe. Emotional regulation is more often affected by damage to the limbic system, and memory and learning abilities are often associated with damage to the temporal lobes or hippocampus.