The portion of women in the workforce has nearly doubled since 1950. As a result, fewer mothers are providing services inside the home. How has this trend affected GDP

Current GDP (both total & contributed by women) has increased. However GDP in 1950 was under estimated.

Explanation:

GDP is the total value of goods & services produced by an economy, during a given period of time. It doesn't include value of qualitative family care services, done by women.

So GDP in 1950, not including value of women's family care work would have been an under estimation of total GDP & women's contribution to GDP also.

After 1950, when women shift from house work not accounted in GDP to outside work accounted in GDP, GDP & women's contribution to GDP both rise.

the answer should be E according to sentence structure