By default, the page size of a new document is ___ inches by ___ inches.

The correct answer is (A) 8.5 and 11. By default, the standard page size for a new document in most word processing applications, particularly in North America, is Letter size, which measures 8.5 inches wide by 11 inches high. This is the most common paper dimension for printing and general use.

• (B) 7.5 and 12 is not a standard default page size.
• (C) 7.5 and 11.5 is also not a standard default page size.
• (D) None of these is incorrect because option (A) represents the widely accepted default.