submission of an article to a peer-reviewed journal inclusion of the new explanation in a biology textbook posting observations and conclusions on the scientist's website inviting reporters from many organizations to a press conference
I gave my students this multiple choice question: A scientist performs an experiment which suggests a new explanation for the digestion of certain proteins in humans. These results should first be communicated to the scientific community by which means?

Only one answer is correct among these 4 choices:
- submission of an article to a peer-reviewed journal
- inclusion of the new explanation in a biology textbook
- posting observations and conclusions on the scientist's website
- inviting reporters from many organizations to a press conference

Could you tell me which one is correct?

submission of an article to a peer-reviewed journal