Passage Summary: Power lines get hot when they carry electricity, but wind helps cool them down depending on how fast it blows and whether it blows across or along the line.

Reasoning: The temperature of a transmission line is determined by the electrical load it carries (which heats it) and wind conditions (which cool it based on speed and direction).

Analysis: Since the stimulus provides a set of variables that influence a single outcome—line temperature—we should look for an answer that synthesizes these factors. Specifically, the text establishes that load and wind have opposing effects. This suggests that a transmission line could potentially handle a higher-than-normal electrical load without overheating if there are strong crosswinds present to offset the heat. Look for an answer choice that logically combines these physical properties.