If visibility reported by an ASOS/AWSS station is 12 statute miles, how is it displayed in the METAR report?

In the METAR report, visibility is expressed in statute miles (SM) when reported, and if the visibility is 12 statute miles, it would be displayed as "12SM." This abbreviation clearly indicates the measurement unit, which is important for pilots and meteorologists to understand the visibility conditions accurately.

The choice "B" indicating 10SM does not accurately reflect the reported visibility of 12 statute miles. The other options also do not match the correct format or values. "C" uses "M" which is not the standard for visibility in METAR reports, and "D" similarly does not correspond to correct visibility measures. Understanding how visibility is represented helps in interpreting METAR correctly for safe aviation operations.