Which of the following sources is the most reliable, valid source to include in a historical research paper about the lives of us soldiers fighting in world war i?
a: a recent news article about a statue being built on a famous world war i battlefield
b: a teacher's lecture on how world war i soldiers routinely dealt with disease and hunger
c: your great-grandfather’s journal, which discusses his time in france as a world war i soldier
d: a history textbook that describes troop formations and weaponry employed by each nation during world war i

the reform movements that arose during the antebellum period in america focused on specific issues: temperance, abolishing imprisonment for debt, pacifism, antislavery, abolishing capital punishment, amelioration of prison conditions (with prison's purpose reconceived as rehabilitation rather than punishment), the humane treatment of animals, the humane and just treatment of native americans, the establishment of public institutions for the care of the destitute, orphans, blind, and mentally ill, the establishment of public schools, the abolition of tobacco use, vegetarianism, health reform, homeopathic medicine, woman's rights (including, at first, especially the establishment of a woman's right to own property apart from her husband and her right to sue for divorce), and the amelioration of labor conditions (including higher pay, the right to form unions, the right to strike, and the demand for limits on the number of work hours, and safe working conditions).

explanation: