Of the $2201$ passengers on the RMS$$ Titanic, only $711$ survived. The practice of open double quotewomen and children firstclose double quote was first used to describe the chivalrous actions of the sailors during the sinking of the HMS Birkenhead in$1852,$ but it became popular after the sinking of the$$ Titanic, during which$53\%$ of the children and$73\%$ of the$$ women, but only$21\%$ of the$$ men, survived. Part of the protocol stated that passengers enter lifeboats by ticket class as well. Complete parts$($a$)$ through$($c$).$