Which statement is true?

• A. In 1884, William Dunn and Alfred Bowers stamped the first metal airplane wing.
• B. Metal sheets for the USS Constitution, Fulton's first steamboat, and the roof of the Old State House in Boston were produced in Revere's copper-rolling mill.
• C. In colonial America, a master was required to provide food, lodging, clothing, and wages to the apprentice.
• D. In the 1980s, sheet-metal workers' knowledge of plumbing systems allowed them to move into indoor-air quality (IAQ) technician positions.

Answer: (B)

Copper sheeting produced by Paul Revere’s copper-rolling mill had a real, documented impact on several landmark projects in early America. Revere’s mill supplied copper sheets used to protect hulls from fouling and corrosion, including those used on the USS Constitution, and his work extended to copper roofing for notable buildings like the Old State House in Boston and even materials used on early steamboats such as Fulton’s Clermont. Because this combination of projects is well established in history, that statement is the true one.

The other items don’t align with what’s recorded: metal airplane wings in that era aren’t tied to Dunn and Bowers in 1884, colonial apprenticeships didn’t universally guarantee wages along with lodging and food in a standardized way, and IAQ technician roles in the 1980s didn’t arise from sheet-metal workers simply applying plumbing knowledge.