On U.S. charts, you can tell if a named feature such as a rock (i.e. Great Eastern Rock in Block Island Sound) is submerged by the __________.

Correct Answer: Option C — style of type used to print the name

According to NOAA Chart No. 1 and Bowditch, upright and slanted lettering styles indicate whether a feature is above water or submerged. Submerged rocks and navigational hazards are designated by slanted (italic) type rather than vertical type.