In the table, the first row "Men" represents men talking to women who respond with no emotions. In the workplace, men only thought 9% of the women were angry, but at home men thought 30% of the women were angry. At work, men were probably thinking women were just acting professionally. At home, they were probably wondering if bae was mad.
The second row "Women" represents women talking to men who respond with no emotions. The workplace percentages are 15% and 78% following the same trend as above.
The "institutional" part of the question stem refers to a bias that is not at home. Something like in the workplace, or at school. Something at home would be more of an individual discrimination. This narrows the choices down to (A) and (B). (B) is wrong because women only talked to men in the study, not other women.