Brad has experienced a relatively severe left hemisphere stroke. As a result, he is unable to move his right arm and has a great deal of difficulty with planning and with maintaining attention. The location of his stroke is most likely the .

Frontal lobe

Explanation:

The frontal lobe is the portion of the cerebral cortex that is involved in the process of, consciousness, thinking, attention, memory, sexual behavior, and personality traits. The frontal lobe is present in the front part of the brain.

In the given question, since Brad is not able to maintain his attentive behavior, not able to plan which requires thinking, and also mot able to move his right arm shows that the affected part of the brain is the frontal lobe.

Thus, the Frontal lobe is the correct answer.

protistas excret ethanol used in the manufacture of vinegar