Which of the following led to the increased popularity of automobiles? ford’s use of skilled labor to make each car one at a time ford’s decision to make cars more expensive ford’s invention of the assembly line ford’s revolution of the assembly line to make cars less expesive

The answer is d: Ford's revolution of the assembly line to make cars less expensive.

although they saw he invented the assembly line he did not it was in fact Ransom E. Olds who did. all that Ford did was improve it. he put a person to do one thing and that was what they did nothing else. this made it faster as to this had nobody fighting to do the job with the person they were working with.