Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 26 to 30.

We asked over three dozen experts, scientists, engineers, futurists, and organizations in five different disciplines, including climate change, military, infrastructure, transportation, and space exploration, about how the machines of 2100 will change humanity. The (30) _____ we got back were thought-provoking, hopeful and, at times, apocalyptic.

(Adapted from https://www.popularmechanics.com/)