What is one reason why marx would disagree with this statement?

Marx disagreed with that statement because it lacked the element of revolutions.  For Marx, in order for effective change to come about you have to get rid of the old order through revolutions so that it is totally taken out and to allow a new system to take root and flourish.

here you go hope it heps "horace mann"

when in doubt choose c

it's what my teacher told my class when we were going into psats