Why couldn't women get the disease ald?

Regarding most of the narrator’s story, which word best describes the tone?

Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.

What does it mean for an allele to be dominant?