Initially, I was going to say exhaustion, however with further research, I found that the first stage would be alarm. So your answer is:
<span>The first stage of the body‘s reaction to stress is known as the alarm stage
A. alarm
I hope this helped you, have a nice day
~ Karma
</span>
Answer:
the child's nut allergies
Explanation:
although asthma is a condition that does affect breathing, since the child had recently eaten a cookie at school, it's more likely that he's in the emergency department because of that cookie. that cookie could've had nuts in it, which triggered the child's nut allergies.
That would be a stanchion or a yoke i believe