Option A :- INCORRECT
This is true about the statement. It is required of a professional to have undergone such an extensive training before receiving such a title, but it is not sufficient enough in respect of an effective solution to the described challenge.

Option B :- INCORRECT
Professional rock climbers will not find it difficult to avoid risky rock climbing practices since they have been trained in that line. Risky rock climbing practices may not be associated with professional rock climber. So this statement is not in support of the argument.

Option C :- INCORRECT
This is partially true because it is in support of the plan but it does not cover the totality of the idea.

Option D :- INCORRECT
It is obvious that the idea of the question statement was developed for the purpose of reducing the number of falls. But we have no statistical data to show the number of falls.

Option E :- CORRECT
YES, From the question statement, it was recorded that this rock climbing phase under consideration is exceptionally difficult and therefore requires a special training, Professionals in rock climbing are expected to have taken training that will help them to withstand any challenges that could be encountered in the process of climbing the rock. While amateurs who are not specially trained for this face can encounter some difficulties which might result to a fall, hence the conclusion extracted from this from this statement is very coherent with the question.