The statement that is best supported by Abigail Adams writing her husband a letter arguing for women's rights while he attended the Second Continental Congress is:
Colonial women had social and political influence, despite having few legal rights.
This choice reflects the idea that Abigail Adams, as a woman, engaged in the political discourse of her time and sought to influence her husband’s views on women's rights, indicating that women were active participants in the political conversation even if they were largely excluded from formal political rights and power.