She knelt down just infront of him , a hand grabbing the top of his helmet as she tried to study his eyes , wondering why he was n't able to see . " Hold still . " She snorted angerly , annoyed . " And do n't worry about me , I ' m fine .

Pick from:
1). He may have been blind to begin with .
2). He may have gotten glass in his eye .
3). He may have crashed his bike .
4). He may have gotten a chemical in his eye .
Answer the following question: What may have happened before he was unable to see ?
3).