Answer :
Answer:
repeat the investigation several times
Explanation:
Performing multiple trials, or repeating an investigation several times, often increases the reliability of your results. This is because repeating the experiment helps you spot errors and determine whether or not you have extra variables in the experimental design.
Multiple trials also help you make sure that your measurements are accurate (correct). If you take only one measurement, it can be difficult to know if that measurement is accurate. But if you take more than one measurement and they all agree, it is likely that you made the measurement correctly.