The Progressive movement originated due to several reasons, among which "renewed interest in regulating big business" and "rising social problems caused by rapid growth in cities" are particularly significant.
The movement emerged in response to the negative effects of industrialization, urbanization, and the excesses of big business, prompting a push for reforms. While the passage of antitrust laws and regulations was a direct outcome of the movement, it was the growing awareness and concern over these social and economic issues that initially led to the movement's formation.
Therefore, the most relevant reasons from your list are:
- Renewed interest in regulating big business
- Rising social problems caused by rapid growth in cities