The most important factor in making Mesopotamia's farmland fertile was the river that ran ran through it and flooded annually.
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Answer: Dr Ramen used Correlational research method;
Dr Ramen was studying the sensitivity of supertasters.
Explanation: Correlational research methods can be simply defined as a non experimental way of obtaining information about the correlation (relationship) between two or more variables.
Dr Ramen was looking for the relationship between two variables such as; the size of taste bud and number of food that could be tasted, this shows that she used the correlational research method in her study.
After the studies, Dr Ramen found that there was a relationship between the size of a participant's taste bud and the number of foods that a participant could taste, the shows that she was most likely studying the sensitivity of supertasters.
