Final answer:
The signs of a concussion include a variety of symptoms such as nausea or vomiting, headaches, blurred vision, sensitivity to light, difficulty concentrating, thinking or making decisions, and feeling overly tired or having difficulty with coordination or balance.
Step-by-step explanation:
Signs of a concussion include:
A) all the answers are correct
B) O nausea or vomiting, headaches, blurred vision and sensitivity to light
C) O difficulty concentrating, thinking or making decisions
D) O feeling overly tired, difficulty with coordination or balance
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