"On Tralfamadore, says Billy Pilgrim, there isn't much interest in Jesus Christ. The Earthling figure who is most engaging to the Tralfamadorians mind, he says, is Charles Darwin- who taught that those who die are meant to die, that corpses are improvements. So it goes" (Vonnegut 210).
This quote compares the Tralfamadorian way of thinking to Darwinism. This photo is significant to the quote because it is of a book called "The Darwin Awards", named after Charles Darwin, and describes many idiotic ways in which people got themselves killed and therefore earned a "Darwin Award"- a symbolic award given to those who "voluntarily remove themselves from the gene pool".
I believe this quote may reveal the fact that Vonnegut believes in Darwinism and "survival of the fittest ", and rejects religion in order to favor science. Some followers of religion reject Charles Darwin's ideas of evolution in favor of Creationism. The Tralfamadorians are not interested in religion but agree with Darwin's theories about life, including ones that some religious people are disturbed by, such as that "corpses are improvements" of certain individuals and those who are meant to die, die. This information could be perceived as fitting with an anti-religion theme that I believe is prevalent in the novel.