Final answer:
Abigail Adams enrolled a black student into a local evening school, which demonstrated her commitment to equal education opportunities for all individuals regardless of their race.
Step-by-step explanation:
In 1791, Abigail Adams enrolled a black student into a local evening school. This significant action of Abigail Adams demonstrated her commitment to equal education opportunities for all individuals regardless of their race. By enrolling a black student in a local evening school, she challenged the prevailing prejudices and discrimination of the time.