Question

which sentence uses the word uncertainty correctly?○ the delighted puppy wagged its tail and bounded toward me with uncertainty.○ i was filled with uncertainty and confusion at my first swim meet.○ his brash, swaggering tone made his uncertainty clear.○ theres a lot of uncertainty concerning the color of grass in springtime.

Explanation:

"Uncertainty" means a state of doubt or not being sure.

1. A delighted puppy's excited actions contradict uncertainty, so the first sentence is incorrect.
2. A first swim meet would logically cause doubt/confusion, making this sentence correct.
3. A brash, swaggering tone shows confidence, not uncertainty, so this is incorrect.
4. Grass in spring is reliably green, so there is no real uncertainty here, making this sentence incorrect.

Answer:

I was filled with uncertainty and confusion at my first swim meet.