单选题 Whether a colored object would, on two viewings separated in time, appear to the viewer as similar or different in color would depend mostly on ______.

A、 the color mechanism of the eye in use at the time of each viewing
B、 whether the object was seen in artificial or natural light
C、 what kind of viewing had immediately preceded each of the viewings
D、 the individual's power of lateral adaptation

【正确答案】 C

【答案解析】可从第二段第三句话“The longer the time of viewing, the higher the intensity, and the larger the area, the greater the effect will be in terms of its persistence in the succeeding viewing situation.”推断出来。A眼睛的视觉机能；B是在自然光下还是在灯光下；C转移视线前所见景物； D个人适应能力。