The unexpected results of the physics experiment confounded the research team, prompting them to reexamine their initial assumptions.
物理实验出人意料的结果使研究团队感到困惑，促使他们重新审视最初的假设。
Which choice best defines “confound”?
B — To confuse; to mix up.. “confound” means To confuse; to mix up..
Which word means “To confuse; to mix up.”?
C — confound. “confound” means To confuse; to mix up..
confound — To confuse; to mix up.. In Chinese: 使困惑；混淆.
confound is pronounced //kənˈfaʊnd//.
The unexpected results of the physics experiment confounded the research team, prompting them to reexamine their initial assumptions. (物理实验出人意料的结果使研究团队感到困惑，促使他们重新审视最初的假设。)
bewilder, perplex, muddle — all close in meaning to confound (To confuse; to mix up.).
clarify, enlighten — each the opposite of confound (To confuse; to mix up.).
Yes. confound is on the SAT Prep Difficult list — the higher-register words that decide the hard questions. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
con- + found(倒) → 搅到一起 → 弄混。