Background information: Friedrich Engels was a German socialist whose family was wealthy cotton manufacturers. When he was twenty-two, he was sent to work at the family factory in Manchester, England. This excerpt is from his book, The Condition of the Working Class in England, which was published in 1844. Which of these lines from the text provides a clue that Engels is a socialist and therefore opposed to capitalism? "Every great city has one or more slums" "The streets are generally unpaved" "The modern art of manufacture has reached its perfection" "the attempts of the proletariat to rise above this abasement".