Unlike adults who have had their corpus callosum cut, children born without a corpus callosum are generally able to:

I believe the answer is: verbally describe what they feel with the left hand.

 corpus callosum is the part of our brain that connected the left and right hemisphere which allow the flow of information between the two parts.
People without  corpus callosum  tend to loss control of the right side of the brain, so the children are most likely to communicate only with their left hand.