Final answer:
Scientists repeat experiments multiple times to ensure the results can be trusted, which is crucial for building reliable scientific knowledge. Repetition helps verify that findings are consistent and not due to random chance, while also encouraging scrutiny and confirmation by the scientific community.The right answer is A
Step-by-step explanation:
The best explanation for why scientists complete the same experiments many times is A. to make sure the results can be trusted. Repetition is a fundamental part of the scientific process. It ensures that experimental results are reliable and not just due to chance. When multiple experiments yield the same outcomes, the likelihood that the results reflect the true nature of the phenomenon being studied increases.
Furthermore, scientific claims must be substantiated by evidence that other researchers can scrutinize—this means being able to repeat experiments and obtain consistent results. The repetition of experiments is critical not only to verify the findings but also to build a body of evidence that supports or refutes a hypothesis. Trustworthy scientific knowledge is built on the foundation of replicable and verifiable evidence.
Lastly, a vital aspect of good scientific practice is skepticism and verification. Scientists question not only their conclusions but also actively seek out other researchers to confirm, challenge, or build upon their findings. Thus, replication by others is essential for the advancement of scientific knowledge.