Part a: which two statements express the central ideas of the text? a. hamilton developed important software that was integral to landing astronauts on the moon and returning them safely to earth. b. during hamilton's time working with nasa, her ideas and suggestions weren't taken seriously because of her gender. c. the coding that hamilton took part in on the apollo program established software engineering, a necessary branch of computer science. d. nasa experienced several technical difficulties during their flight because of their failure to accept the importance of software engineering. e. hamilton's work at nasa showed them how easily human error can occur and the importance of relying on technology. f. the coding that hamilton developed during the apollo program continues to be used today to guide nasa's crafts.