While researching a topic, a student has taken the following notes:
- In 2021, ecologist Maya Chen conducted a study in Louisiana comparing salt-marsh restoration plots planted with smooth cordgrass at high density with plots planted at low density.
- Over six months, the high-density plots accumulated an average of 4.2 centimeters of sediment, whereas the low-density plots accumulated 2.9 centimeters.
- During simulated storm surges, the high-density plots lost 18% fewer plants than the low-density plots.
- Chen concluded that denser planting may improve salt-marsh restoration by promoting sediment buildup and plant stability.
The student wants to summarize the study. Which choice most effectively uses relevant information from the notes to accomplish this goal?
For a rhetorical-synthesis question asking for a summary, identify the study's central comparison and all major findings. Eliminate choices that provide only background, omit a central result, or introduce a statement that conflicts with the notes; then select the concise choice that accurately combines the essential information.
Hints
Focus on the main results
A summary should state what was compared and include the study's major outcomes, not just its purpose.
Check for completeness
Look for a choice that incorporates both measured outcomes rather than focusing on only one.
Check every claim against the notes
Eliminate any choice that changes or contradicts one of the reported findings.
Step-by-step Explanation
Identify the study's central comparison
The study compared Louisiana salt-marsh plots planted with smooth cordgrass at high density with plots planted at low density.
Identify the main findings
The high-density plots accumulated more sediment over six months and lost 18% fewer plants during simulated storm surges. Together, these findings support Chen's conclusion that denser planting may promote sediment buildup and plant stability.
Choose the complete and accurate summary
The best choice includes both major outcomes and accurately connects them to the high-density plots. It does not merely describe the study's purpose, omit one result, or contradict the sediment data.