The correct answer is b. instrumental tasks
According to Talcott Parsons' sociological theory of the family, the husband and wife perform different roles in a family unit. While the husband performs instrumental tasks, the wife typically performs expressive tasks. Instrumental tasks include being the primary breadwinner of the family, paying for basic necessities and wants of the family, etc. On the other hand, expressive tasks performed by the wife include loving, emotionally supporting and nurturing her husband and children.