Choose the sentence in this excerpt that indicates the author used facts from a study in his research.
According to the National Climatic Data Center, “the most recent glacial period occurred between about 120,000 and 11,500 years ago.” Glacial periods always begin with a climate shift that causes global temperatures to fall. When the last glacial period began, the cold temperatures allowed glaciers to form and grow. For over 100,000 years, snow and ice dominated many landscapes across the planet.
A) The last glacial period began when global temperatures fell.
B) The National Climatic Data Center has provided important information about glacial periods.
C) Glacial periods have changed many landscapes on Earth during the last 100,000 years.
D) Snow and ice have been key features of the Earth’s landscape for thousands of years.
The correct answer is B) The National Climatic Data Center has provided important information about glacial periods.
Explanation: This sentence indicates that the author relied on a specific source, the National Climatic Data Center, which suggests that factual data from a study was used in the research. The mention of this authoritative source supports the idea that the information presented is based on research findings.