Hi some synonyms of obstinacy are determination , purpose and stubbornness.Some examples are a senator who staunchly refuses to compromise and She refused umpteenth times to eat broccoli .
Answer:
D. For defending the rights of African-Americans
Explanation:
If you mean Fredrick Douglass, then D would be correct. Why? Fredrick Douglass was pro African-American rights. He created the North Star newspaper to express his opinions. If you want to read more about him, go to Wikipedia or some other site.
The answer is c. beacuse it means to examine thoroughly and carefully