Alessandro has been under a great deal of stress and is experiencing headaches and thinks he has a stomach ulcer as well. These are psychosomatic conditions would suggest he has entered which stage of the General Adaptation Syndrome?

Exhaustion stage

Explanation:

General Adaptation Syndrome(GAS) has 3 stages: alarm, resistance, and exhaustion. In the alarm phase, you will experience an increased level of stress. At the resistance level, your body will start to adapt to the stress until the exhaustion stage come when the body too tired.  

Headache and stomach ulcers are examples of the psychosomatic condition. The psychosomatic disease will start to appear at the exhaustion stage since the body had passed the capability to adapt to the stress.

it would be a lot of diff ones. hope this ! < 3 : )