You're planning a fieldwork investigation to collect data on the types of litter found in your local park. Which of these strategies would help to make sure your results are not biased?
Only collect data from areas that are easy to reach.
Only record data for litter items that are larger than a certain size.
Baroque art features strong contrasts, while Rococo art prefers more subtle transitions
Baroque art is generally larger in scale than Rococo art

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