In the story “to build a fire,” what information did the man ignore? always make camp and build a fire while there is still daylight. no one must travel alone in the klondike after fifty degrees below zero. even though the creeks freeze solid, liquid water exists near springs. always take along survival gear and wear protective clothing.

In the story "To Build a Fire", the information that the man ignores is that no one must travel alone in the Klondike after fifty degrees below zero.

Explanation: The short story "To Build a Fire" written by Jack London focuses on a man's long journey throughout the Yukon territory. Although he meets an old man who warns him that it is dangerous to travel alone in the Klondike when it is below fifty degrees, the protagonist ignores the old man's advice and decides to travel alone in the Klondike while exposed to extreme cold anyways. Eventually, he freezes to death for not paying attention to the old man's warnings.