"A" is quite correct, though "C" adds a bit more detail of how soldiers felt about Trench Warfare. In my honest opinion, I think "D" is the correct answer.
Trench Warfare was rather horrific, and brutal to say the least -- it was also "boring" during stalemates if neither party was engaging in any sort of push.
Note: I'm not a teacher of any sorts! This is just my opinion from things I've learned in the previous years.
Answer:
B. Settlement of freedmen in Africa.
Explanation:
Quakers were influential in recognizing slavery and slave trade activity as a leading moral concern within their own religious institutions, as many of their members practiced the institution of slavery or involved in the slave trade. Both Quakers and slaveholders supported the idea that freedmen should be settled in Africa because it would help them to reconstruct a better life. Secondly, it would separate them from the slaves.
Northern Union morale was low, and so it was important to raise the people's morale to have them continue to support the US in trying to defeat the South
hope this helps