The correct answer is the following: option a. The difference that arises as a result of the different ways in which the speech and the poster convey their intended messages is that the poster's images features the male factory workers more prominently and almost hides the female worker in the background, while the speech specifically acknowledges both male and female workers equally.
While in the speech the orator acknowledges the importance and impact on American production that both men and women have, in an equal level, the poster highlights the role of the male worker as it puts their figure in the main spotlight of the poster, relegating the female one to a secondary role.