Answer:
The correct answer will be- repetition of the experiment ensures the validity and truthfulness of the results.
Explanation:
In the scientific community, the repetition of the experiment using the same procedure by the same researcher or another researcher plays an important role.
The repetition of the experiment is done to test and verify the results which could be doubtful or fraud. The experimental results of another experimenter act as evidence which if similar supports the experiment and help ensure the validity of the experiment.
Thus, the repetition of the experiment ensures the validity and truthfulness of the results is the correct answer.
