Answer:
A. Lee wants to preserve the Union.
Explanation:
The letter of Robert Edward Lee to George Washington Custis Lee in January 1861.
He was an 1829 graduate of West Point who had distinguished himself in the
U.S-Mexican War. Lieutenant Colonel Robert Edward Lee wrote to his eldest son while serving as the acting commander of the Department of Texas.
An excerpt from the letter says;
"But I can anticipate no greater calamity for the country than a dissolution of the Union. It would be an accumulation of all the evils we complain of and I am willing to sacrifice everything but honor for its preservation."
In conclusion, the above statements suggests that Lee wants to preserve the Union.