What was the original problem and your answer as given? What you give here is the instructor's critique of your answer. That tells me only, say, a third of the whole problem and solution.

Reading between the lines on what is given I'd think the big two immediate issues are 1. Obtaining fire or a method to make a fire and 2. Shelter. Everything else is secondary to that particularly given his statement "It is late in the day and nightfall will be approaching." His focus on long-term resource gains like snow shoes or fish traps and on immediately getting a complete inventory of resources is definitely WAY down the list of things to do in a survival situation.

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Truth is stranger than bullshit!