Final answer:
Fossils of different ages and types can be compared side by side to attain a more complete understanding of life's history.
Step-by-step explanation:
The correct answer is C. Fossils of different ages and types can be compared side by side.
Fossils contain preserved remains or traces of ancient organisms, providing valuable insights into past life forms. By comparing fossils of different ages and types, scientists can establish evolutionary relationships and understand the changes that have occurred over time. This helps them attain a more complete understanding of life's history.
For example, the discovery of fossils of extinct species like dinosaurs has greatly contributed to our understanding of prehistoric life on Earth.
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