The most accurate statement about how a group in Texas was affected by the number of men fighting for the Confederacy during the Civil War is:
More economic opportunities were available for women.
As many men went off to fight in the war, women often took on roles traditionally held by men, which opened up new economic opportunities for them in both the workforce and managing households. The other statements are less accurate in terms of the direct impact of men leaving for war on various groups within Texas.