Scientists today can use many investigative methods to study evolution. Which method was developed after Darwin's time?
O DNA comparisons
o observations
O comparison of fossils
O experimentation

DNA comparisons

Explanation:

The molecular nature of DNA and its role in inheritance and evolution was not known during Darwin's time.  Therefore, it was not possible to compare similarities in DNA sequences between different species to understand their evolutionary relationships.  

This type of method was not in regular use until the 1980s/1990s, when sequencing and DNA amplification technologies were invented