Which of these details related to the topic of the industrial revolution is objective? “money-grasping mill owners” “ragged, penniless workers” “brilliant, innovative thinkers” “six-day workweeks”

the answer is: “brilliant, innovative thinkers”

Details such as   “money-grasping mill owners” OR “ragged, penniless workers”  are extremely subjective depending on which individuals you're referred to.
One thing that remains true no matter from which perspective you see is the innovations that created massive differences in the way we approach our economy.