Final answer:
Enslaved people would take actions to educate themselves by seeking opportunities to read and learn, such as in the example line that expresses a longing to read the Bible.
Step-by-step explanation:
The best line that describes the kinds of actions that enslaved people would take in order to educate themselves is option C: "And I longed to read my Bible/For precious words it said;". This line shows the eagerness of enslaved people to educate themselves and their determination to read the Bible, which was often their only access to education and literacy.
Learn more about Education of enslaved people