Explanation
Correct answer: C.
Choice C is the best answer. Noting the time frame of the US Civil War and the fact that Amos enlisted during this time frame, the sentence emphasizes that Amos’s enlistment date places him among the historically significant group of US Navy sailors of Filipino descent who served during the Civil War.
Why the other choices are wrong
Choice A
Choice A is incorrect. The sentence identifies Amos and Ignases and notes that Amos’s enlistment date was later than Ignases’s; the sentence doesn’t explain the historical significance of the date.
Choice B
Choice B is incorrect. The sentence identifies Amos and Ignases as US Navy sailors of Filipino descent, noting Ignases’s birth year; the sentence doesn’t provide Amos’s enlistment date or its historical significance.
Choice D
Choice D is incorrect. The sentence provides Amos’s enlistment date and mentions that he served alongside a sailor of Filipino descent; it doesn’t explain the historical significance of the date.