The telescope's sensitive detectors can register minute variations in starlight, revealing the presence of distant exoplanets.
望远镜的敏感探测器能记录星光中微小的变化，从而揭示遥远系外行星的存在。
Which choice best defines “sensitive”?
B — Quick to detect or respond to slight changes, signals, or influences. “sensitive” means quick to detect or respond to slight changes, signals, or influences.
Which word means “quick to detect or respond to slight changes, signals, or influences”?
C — sensitive. “sensitive” means quick to detect or respond to slight changes, signals, or influences.
sensitive — quick to detect or respond to slight changes, signals, or influences. In Chinese: 敏感的.
sensitive is pronounced /ˈsɛnsɪtɪv/.
The telescope's sensitive detectors can register minute variations in starlight, revealing the presence of distant exoplanets. (望远镜的敏感探测器能记录星光中微小的变化，从而揭示遥远系外行星的存在。)
responsive, delicate, susceptible — all close in meaning to sensitive (quick to detect or respond to slight changes, signals, or influences).
insensitive, unresponsive — each the opposite of sensitive (quick to detect or respond to slight changes, signals, or influences).
Yes. sensitive is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. 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.