Long hours and intensity of work deter mothers, in particular, from taking up senior positions. The assumption is that women would be ready to take these positions if they were in a different scenario.
A – Wrong
Totally irrelevant about what the gender of the employer is.
B – Wrong
The text clearly says the “senior positions deterred mother form seeking promotions for which they were qualified”.
C – Correct
This paraphrases the assumption that I have mentioned above.
D – Wrong
Nothing is mentioned about the pay that women receive in the third paragraph.