Both are OK. Personally I prefer "that". The "discusses the range ...
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AnonymousThis section examines a range of strengths and limitations of the experiment and discusses improvements that could improve the reliability of results should this experiment be repeated in the future.I think "examines the strengths and limitations" should suffice. I'm not sure you need "range".
AnonymousThis section examines the strengths and limitations of the experiment, and discusses how the reliability of the results may be improved should this experiment be repeated in the future.Yes, this one is OK.