The correct option is A.
Proactive interference refers to the tendency of the knowledge that one had learned previously to prevent one from subsequent learning. Thus, proactive interference is the difficulty that comes with learning new things due to the stuffs that one had learned before. For instance, an individual may find it difficult to learn Spanish because he has previously learn German.<span />
I chose the answer that said "Transition to socialist and communist government systems, and creation of labor unions."
Answer:
The car locomotes
The cars engine makes noises when ignited
The fumes produced by the car when it moves.
Explanation
