Question

all of the following are possible sources of error in a scientific investigation except for discovering new variables as the experiment proceeds. completing multiple trials during an experiment. using the wrong equipment during the experiment. not controlling all the variables in an experiment.

Answer 1

completing multiple trials during an experiment.

Answer 2

I think the correct answer from the choices listed above is the second option. All of the following are possible sources of error in a scientific investigation except for  completing multiple trials during an experiment. Completing multiple trials will instead help you minimize errors in the experiment.