Final answer:
The main disadvantage of Kirk's experiment with the wolf is that captivity may alter the wolf's natural food choice behaviors, leading to inaccurate conclusions.
Step-by-step explanation:
One disadvantage of Kirk's investigation in keeping a wolf in captivity to observe its food choices might be that the wolf's behavior could potentially be influenced by its captivity. Being in an unnatural environment, the wolf may not exhibit its normal selection behaviors that would occur in the wild. Additionally, the presence of the observer or the limited variety of food offered could also impact the wolf's choice, leading to skewed data that does not accurately represent the wolf's natural preferences.
This reflects a broader issue in experiments where variables to test outcomes are limited or influenced by the research conditions, which can result in misleading conclusions about the natural behaviors or preferences of the subject being studied.