Question

Cameron is collecting data to determine the time of completion for each stage of germination in seeds. He is using bean seeds for his investigation and recording his results. He repeats his data collection many times to obtain reliable results. Which aspect of his experimental process is most important for obtaining reliable results?

Answer 1

A.Collecting enough varieties of onion types
B.Talking to other scientists during the experiment
C. Taking observations at precise intervals
D. Using a variety of microscopes for exact measurements

this is an old question but I will respond to help out future students

anyway, the question is asking which one will make the results more ***reliable**. so you should be looking for a choice that will increase accuracy and precision of the data collected. for example, eliminate D (this will make the results less reliable since you are introducing new instruments, and thus new error sources) and A (he's studying bean seeds, why introduce a second type of plant?)

so try to decide whether B or C will be better in achivieving his goal.