True.
After forming a hypothesis, or an explanation that would be experimented on, you would be <em>testing</em> it to see if it gives the results you were looking for.
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D. Evaluate
Explanation:
The team of ecologists failed to implement the evaluation stage of adaptive management approach as the didn't compare various possible methods that could be used for the managemenr process and evaluation refers to analysis of completed or ongoing activities related to the topic in consideration to determine the management effectiveness and efficiency. Since they forgot to evaluate the various possible methods, evaluation is the missed approach.
