They are sources that you can find the date, author, and have real facts and not just made up. Like if you went to the IRS website then that is a credible source for tax where as going to Wiki they are not credible because anybody can go there
In "All Rivers Run to the Sea" by Elie Wiesel, it shows the power of Holocaust literature by using the author's real experiences as a testimony to the Jewish culture. His memories paint that the Jewish had loving families and went through great despair because of the hatred towards them. They emphasize the resilience his people had to rise above their painful experiences.
The answer is D. The President reports that 60% of troops will be removed from Afghanistan before the end of the year.
I believe the answer is B