Final answer:
Detailed information about the risks involved with immunizations would best support Kim's thesis on exploring the controversies surrounding childhood immunizations.
Step-by-step explanation:
The detail that would best support Kim's thesis exploring the controversies surrounding childhood immunizations is detailed information about the risks involved with immunizations. This detail would provide evidence of the controversies surrounding immunizations and their potential negative effects. Kim could discuss the different risks associated with immunizations, such as potential side effects or adverse reactions, and how these risks contribute to the overall controversy.