Respuesta :
Sentence A is best. The context in B and C make no sense. Uncertainty means doubtful or unsure. One who is brash and swaggering is the opposite of uncertain. A dog wagging its tail is happy or confident not uncertain.
Answer:
A) I was filled with uncertainty and confusion on my first day of high school.
Explanation:
I get why you may think it may be C)The delighted puppy wagged its tail and bounded toward me with uncertainty. But he correct answer is A
Hope i kinda help you.
PLEASE GIVE ME BRAININESS.