Please submit your concern

Explanation:

In the sixth paragraph, the author mentions the view of pro-choice supporters in this regard, “They object to the notion of the home being the “women's sphere”. Women's reproductive and family roles are seen as potential barriers to full equality. Motherhood is seen as a voluntary, not a mandatory of “natural” role.” True, they object “women’s sphere” part but the author has not cited that they support “joint sphere”. Therefore, option 1 can be eliminated.
The supporters also support what option 2 says. But option 2 does not answer the question as to why they object the notion of home being the ‘women’s sphere”.
They object because, as option 3 conveys, the sphere comes in the way of saying that both men and women are equal.
Hence, the correct answer is option 3.