Passage Summary: Since lichens gave the same results as expensive machines when testing for copper pollution, the researcher thinks we can use them for all air quality monitoring.

Conclusion: Lichens can effectively replace expensive mechanical devices for monitoring air pollution without any loss of accuracy.

Reasoning: A study showed that the copper concentrations found in harvested lichens were just as accurate as the readings from high-end mechanical monitoring equipment.

Analysis: The researcher is making a broad generalization based on a very specific study. The evidence only concerns copper pollution, but the conclusion claims lichens can replace monitoring devices for 'information' in general. To strengthen this, we need to bridge the gap between copper and other airborne pollutants. Look for an answer that suggests lichens are equally reliable at absorbing and reflecting the levels of various other types of pollutants, not just copper.