Step 1: Name and explain the real stages (Selye).
• Alarm: immediate {SAM/HPA} activation—adrenaline, cortisol; fight/flight.
• Resistance: physiological adaptation to persistent stressor; coping continues, resources spent.
• Exhaustion: prolonged demand depletes resources—illness, burnout.
Step 2: Eliminate the odd term.
Retention is a memory term, not a GAS phase.
Step 3: Conclude.
$$
\boxed{\text{Retention (Option D)}}
$$