Question

geologists have hailed western australias north pole dome as the site of earths oldest known meteorite impact, based on shatter cones—cone - shaped fractures that form only under the extreme pressures of a strike—and other microscopic shock features in 3.5 - billion - year - old rocks. the team that reported this age argued that such an ancient crater would push large impacts, and their influence on early atmosphere and crust formation, far deeper into earths past than previously recognized. a later field campaign, however, reinterpreted the same site as a smaller, 2.7 - billion - year - old impact structure, illustrating how new measurements and models can revise headline - grabbing claims. in this context, researchers emphasize that the key lesson of the north pole dome controversy is not which date ultimately wins out but ______
13 □ mark for review
which choice most logically completes the text?
① that disagreement between research teams means reliable knowledge about earths earliest impact history may not emerge from such sites, regardless of how much additional fieldwork or laboratory analysis is carried out.
② that the more significant outcome is securing western australias reputation for hosting earths oldest crater, since this prestige should be prioritized over the resolution of scientific uncertainty about the craters true age and size.
③ that robust knowledge about earths earliest history emerges when bold proposals are continually interrogated by fresh data and alternative interpretations rather than preserved as unquestioned scientific lore.
④ that once a dramatic new age is proposed for a crater, later studies should generally confirm rather than challenge it, so that scientific narratives about early earth remain stable and easy for the public to follow.

Explanation:

To solve this, we analyze the context. The text shows how new measurements revised a previous claim about the crater. We need an option that aligns with the idea of scientific knowledge evolving through questioning and new data.

• Option A: Talks about disagreement and reliable knowledge not emerging, but the text's key lesson is about how knowledge is built, not about it not emerging. Eliminate.
• Option B: Prioritizes reputation over scientific uncertainty, which goes against the scientific process emphasized in the text. Eliminate.
• Option C: States that robust knowledge comes from interrogating bold proposals with fresh data, which matches the text's example of new measurements revising claims. This fits the "key lesson" about how scientific knowledge is developed.
• Option D: Says later studies should confirm, but the text shows they can challenge, so this is opposite. Eliminate.

Answer:

C. that robust knowledge about Earth’s earliest history emerges when bold proposals are continually interrogated by fresh data and alternative interpretations rather than preserved as unquestioned scientific lore.