Which sentence expresses confidence about the exam outcome?

• A. They wouldn't let us enter the area.
• B. I'm sure you will get your score.
• C. He could have been killed.
• D. I should have closed them.

Answer: (B)

Expressing confidence about an outcome is shown by using phrases that state certainty about what will happen. The sentence that fits best uses “I’m sure” to show firm belief, and “you will get your score” describes the expected exam result. Together, they convey a confident prediction about the outcome. The other sentences describe a prohibition, a past possibility of harm, or regret about a missed action, none of which assert a confident forecast about the exam.