Why can damage to the medulla be more dangerous than an ordinary muscle injury?

Correct answer: Because medulla controls involuntary life functions like breathing and heartbeat

The governing concept is control of involuntary, vital activities by the brainstem. The medulla helps regulate breathing, heartbeat, and other automatic functions that must continue without conscious effort. Serious damage can therefore threaten life, unlike many ordinary muscle injuries that mainly impair local movement. Option A is correct. The other options incorrectly attribute skin-colour production, plant-hormone production, or only taste detection to the medulla.