The author supports the claim made in paragraph 17 by — expressing what life is like for the survivors of Auschwitz

mourning for the victims whose lives were lost in Auschwitz and other camps

describing the magnitude of darkness and evil that occurred in Auschwitz

comparing the events of Auschwitz to modern occurrences

I think your answer would be "describing the magnitude of darkness and evil that occurred in Auschwitz"

Explanation:

presidency should be the title

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.