The adrenal gland secretes adrenaline during fearful or stressful situations (fight-or-flight response), preparing the body by increasing heart rate, breathing rate, and diverting blood to muscles.
Source: Chapter 6, Section 6.3 – Hormones in Animals
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The examiner expects you to link the adrenal gland specifically to adrenaline and its role in emergency/stress situations. Mention at least one physiological effect (faster heartbeat, increased breathing) to complete the answer. The term "fight-or-flight" is a bonus but not compulsory for 1 mark.