Which of the following is a line of evidence for evolution?

• A. Fossil record
• B. Astrology
• C. Alchemy
• D. Spontaneous generation

Answer: (A)

Evidence for evolution comes from observations that organisms change over time, including the fossil record. The fossil record preserves ancient life in rock layers and reveals a chronological sequence of forms, showing how species appear, disappear, and sometimes transition from one group to another. This pattern supports common ancestry and the idea that life has diversified through gradual changes over long periods. Dating of fossils and the rocks around them helps place these changes on a time scale, illustrating how new traits can accumulate and branching lineages arise.

Other options aren’t lines of evidence for evolution because they don’t provide empirical support about how life changes over time. Astrology is not a scientific method for studying biology. Alchemy is an historical precursor to chemistry and doesn’t address evolutionary relationships. Spontaneous generation is an outdated concept about the origin of life and does not document evolutionary change.