Passage Summary: Young opera singers often ruin their voices early because they have the power to sing difficult roles but haven't learned the technique to do so without hurting themselves.

Reasoning: Young opera singers with significant vocal power are highly susceptible to voice damage because they often lack the technical training to use that power without straining their vocal cords.

Analysis: In a 'Most Strongly Supported' task, we must treat the stimulus as a set of facts and find the most logical inference. The text highlights a specific danger for powerful young singers: they have the 'engine' to perform demanding roles but lack the 'brakes' (technical training) to prevent injury. Look for an answer that connects this lack of training specifically to those with high vocal strength, as the passage notes they are the most likely to suffer career-ending damage.