An experiment testing the hypothesis that nitrogen markers shoot farther than carbon dioxide markers resulted in conflicting test results. The researchers rejected their hypothesis. What should they do next

They should think of an alternative explanation for their results.

Explanation:

The next step that the scientists should take is to interpret why their hypothesis went wrong. The researchers should look for patterns in their observations and provide an alternative explanation for the results which occurred. Based on the results and their understandings, they should further make another hypothesis and check for its authenticity.

In scientific researches, the results of a hypothesis generally do not get the expected results but this leads to new findings and discoveries.