The answer is confused, C
The correct answer is that they 'are not valid'. If the experiment is biased, it entails that it is not objective. For a experiment, and its results, to be valid, it had to be carried out objectively and taking into account all factors.
It is possible that the results disprove a hypothesis, but to be certain it is necessary to see which was the original objective of the study, as it might also prove to some extent a hypothesis, which is probably also biased.
You know, we cant just answer the question off the top of our heads. We need the options like A, B, C, D not just the question...
Answer:
2. However, even these animals may be prohibited "if their presence is detrimental to park management programs.
Explanation:
sentence uses quotes to show that it is taken directly from a research source
