Answer:
The best answer would be - client must have develop muscle rigidity and a sudden, high fever.
Step-by-step explanation:
Neuroleptic malignant syndrome is a case of severe case of idiosyncratic reaction that could be life threatening but rare which is occur due to the antipsychotic drugs or the neuroleptic medications.
THe sysmptoms that are related to this case are high fever that can range between 102 to 104, flactuation in pulse of an individual, confusion, muscle rigidity, autonomic dysfunction and many other physiological cases.
Thus, the correct answer is - client must have develop muscle rigidity and a sudden, high fever.