Final answer:
The type of malpractice most relevant in this case is negligence by commission.
Step-by-step explanation:
The type of malpractice most relevant in this case is negligence by commission. Negligence by commission occurs when a healthcare provider fails to perform a required action that directly leads to harm or injury to a patient. In this scenario, the nurse's failure to observe and document the patient's change in neurologic status and timely respond to it resulted in the patient's death from a stroke.