Damage to the cortex of the left cerebral hemisphere can result in inability to

Understand the language and speak  

Explanation:

The brain is divided into two parts. The left hemisphere and the right hemisphere. Both hemispheres have a different tasks. Both hemispheres complete the brain. The brain is the center part that controls all activity of the human body. The half part of the brain controls the sensation and movement of the right side of the body. The damage that occurs in the right side affects the sensation and movement.  

The left side of the brain is responsible for verbal and communication related to reading, writing, listening, and speaking. When the left hemisphere damaged, the person lost the ability to communicate.

to plan an idea out before