Final answer:
Abigail Adams became a full-time mother after marrying John Adams, but she also managed their homestead and advised her husband on various affairs, showing early feminist consciousness.
Step-by-step explanation:
According to the excerpt "B3: Abigail Adams was a full-time mother after marriage," the role Abigail Adams took on after marrying John Adams was that of a full-time mother (option b). Although she played a role in advising her husband and even ran their family homestead during the Revolution, her main post-marriage role, as the question specifies, was as a full-time mother. Abigail Adams is also well-remembered for urging her husband to "Remember the Ladies" in establishing the new government, expressing early feminist ideas and advocating for women's rights.