at a school science fair. in a newspaper article. at a physicians' conference. in a television commercial.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: If a scientist wants the medical community to revise old information and use new research findings in the treatment of a disease, it would be best to present the information
Possibilities:
- at a school science fair.
- in a newspaper article.
- at a physicians' conference.
- in a television commercial.

at a physicians' conference.