What may happen if the gauge is left in the sun?

The option that states the gauge should not stop standardizing is accurate because most gauges are designed to function properly within a specified temperature range. While prolonged exposure to direct sunlight can cause certain materials to expand or warp, this does not inherently mean the gauge will become unusable or unable to standardize. Proper care and design in constructing these tools often involve materials that can withstand various environmental conditions, including sunlight.

In practice, if a gauge is left in the sun, it might still provide readings that are accurate, as long as it has not been damaged physically or affected by extreme temperatures beyond its specifications. However, it's important for users to be aware of potential issues that excessive heat might cause, which is why considerations around equipment storage and usage in different weather conditions are crucial for maintaining accuracy and reliability.