A group of scientists decide to post their research results on the Internet instead of publishing in

a scientific journal. What part of the scientific process have they skipped and why does it matter?

They forgot to record their information first.

Explanation:

You should always record your information so then you have it for further reference and you can always use it if you need to retry something or are having somebody else do it and they need to make sure that they got the right answer.

The correct answer will be - peer-review of the results.

Explanation:

A scientific method approach to answer the scientific questions based on the experiments.

The scientific method does not stop at the conclusion but it is necessary to represent the results after peer-review by the fellow scientist who checks and verify the eligibility of the result by checking the protocol and comparing the results to earlier performed research on the same issue.

The scientist must publish the results in journals after peer-review which was skipped by the group of scientist in the given question.

Thus, the peer-review of the result is the correct answer.