GRE Sample Test 3 Verbal Reasoning 1

The word in the blank describes what the Internet has done to people’s attention spans. The phrase after the colon provides context for this word by indicating that people will not view a page unless it provides “immediate stimulation.” If people need “immediate stimulation,” then their attention spans must have suffered a diminishment. Of the choices, the words closest in meaning to “diminishment” are a decrease and an attenuation.