Answer:
Option-C
Step-by-step explanation:
Rosie the riveter was a fictitious character used by the writers in the song during 1942. The was inspired by a lady named Rosalind who used to work in a factory which made the plane.
Before world war II, the women used to spend their life as housewives but used to get work at low wages. During world war II, the factories became short of labour as the men were ordered to go for the war. During this period the number of women working in the factories and industries raised.
The character Rosie the riveter encouraged the woman to work in the companies which increased the workforce.
Thus, Option-C is the correct answer.