Final answer:
Granny believes that being physically dominant is not a trait that would help the girl in finding a husband, due to traditional gender roles. Option D.
Step-by-step explanation:
Granny's remark "She won't get one rasslin'. Ain't no boy wants a wife that's gonna whup him every day." indicates her belief that the girl will not be successful in finding a husband if she is seen as too physically dominant or combative, as this would not align with the traditional gender roles favored by Granny's perspective.
The context implies Granny's concern that no man would want to marry a woman who could 'whup' him, suggesting that her ability to wrestle (or 'rasslin', a colloquial term for wrestling) is seen as a negative trait in the pursuit of marriage.
So Option D is the correct answer among the given option.