The author of the passage would be most likely to describe the knowledge gained from studying the bog people as
Good job!
[[snippet]]The author thinks that much has been gained from investigating the bog people but that some information, such as the reason for their deaths, cannot be ascertained.
Incorrect.
[[snippet]]Although some information gained by studying the bog people (such as the reason for their deaths) cannot be corroborated (validated), other part of the information (such as what the bog people ate) can be easily verified.
Incorrect.
[[snippet]]The author believes that much can be learned from studying the bog people and therefore investigating this find has scientific value to the author.
Incorrect.
[[snippet]]The author does not mention earlier finds so it is unlikely that this is the author's view in this passage. Remember - in Reading Comprehension, you cannot assume anything beyond what is stated explicitly in the passage and what may be inferred from the passage.
Incorrect.
[[snippet]]While he or she acknowledges that the investigations of the bog people have not answered all our questions, the author does not indicate that any future research could answer these questions.