Answer:
Mannitol (Osmitrol).
Step-by-step explanation:
Diuretic drugs may be defined as the drugs that increases the urine output of an individual. These drugs helps in the excretion of water from the body and may used to treat the conditions like head injury.
Mannitol is the best drug among the listed in the options. This drug prevents the increase in the intracranial pressure after the head injury. This drug works almost all the entire length of nephron and reduces cerebral edema as well by decreasing the cerebral edema.
Thus, the correct answer is option (A).