A scientist makes a claim that two hominid species have a common evolutionary ancestor. Which of the following must happen to ensure this claim can be considered valid?

The answer would be scientific evidence must be found, verified, and accepted by the scientific community. Scientific evidence is data gathered from a scientific research, which takes a lot of time to conduct. But there are a few things that all this research needs to have in common to make it possible for decision-makers, and ultimately all of us, to admit it as "evidence". Scientific evidence relies on data, and it is critical for researchers to guarantee that the data they collect is representative of the "true" situation. This means using showed or fitting ways of collecting and analyzing the data and ensuring the research is conducted ethically and safely. The researcher have to present their data, results and conclusions in the form of a scientific report or paper. This must be studied by their scientific peers - only they are qualified to assess the validity of the methods and the accuracy of the conclusions the researcher has drawn from the results.