Which word would be least likely to appear in a speech supporting astronauts?
courage
consumerism
honor
duty

Consumerism would be least likely to appear in that speech. A speech promoting astronauts is likely to talk about the admirable qualities of an astronaut, and courage, honor, and duty all exemplify those qualities. However, consumerism refers to the promotion of consumer (or buyer) interests and has little to do with astronauts or supporting them.