Flag day is a holiday in the united states. every year on june 14, people mark this important day. flag day represents the day that the design for the american flag was accepted. this happened in 1777. this first design used the stars and stripes that americans now know so well. however, this day was not celebrated until 1916. at that time, president woodrow wilson made the day a holiday. omar is writing a paragraph about flag day. which sentence should he use to end the paragraph? a) many people believe betsy ross designed the flag. b) flag day was celebrated by many states for years. c) people now mark this day by flying the flag outside. d) president william taft called for a uniform flag design.