Final answer:
Anecdotal evidence is based on personal observation and experience, while scientific evidence is derived from systematic observation and experimentation.
Step-by-step explanation:
Anecdotal evidence and scientific evidence differ in their sources and methods of collection:
Anecdotal evidence (option B) is derived from personal observation and experience. It is based on individual stories or accounts that may not be representative of the larger population. For example, a person claiming that a particular herbal remedy cured their illness.
Scientific evidence (option D), on the other hand, is derived from systematic observation and experimentation. It involves the collection of data using standardized methods, statistical analysis, and replication. Scientific evidence is based on empirical research and aims to provide objective and reliable information. For example, a study that tests the effectiveness of a new drug using a control group and experimental group.
Therefore, the correct answer is D. scientific evidence is derived from systematic observation and experimentation.