Which sentence from the passage contains an oxymoron? A. "I'm waiting," Mrs. Groban said, drumming her fingers on the computer desk.
B. Her mouth gaped open and moved up and down, but she could not find any words to articulate.
C. Tasha, clearly confused, stared at Mrs. Groban—she didn't know how to answer the question.
D. Her blue eyes began to water under the pressure.