Mona lives in North Carolina. She takes an overnight flight to California to visit with family for a month; when she arrives she is fatigued, sluggish, and irritable. For the next week or so she has trouble sleeping. Mona is probably suffering from .

a- Jet lag

Explanation:

One is said to have jet lag if one have the feeling of extreme tiredness and other physical effects after a long flight across different time zones.

It causes fatigue, sluggishness , and irritable feeling. It can also cause one having trouble sleeping.

Mona is suffering from jet lag, because all her symptoms are associated to jet lags symptoms.

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