Answer:
The correct option is
The factory system concentrated production in relatively few locations, and the new transportation infrastructure allowed more goods and people to reach these locations in less time.
Explanation:
Development of the factory system and the development of new transportation infrastructure facilitated British industrialization by providing fast mode of transportation for both goods and labor. Also, the establishment of industries led to more production supported by timely supply of raw materials, fuel, labor etc. All this promoted the Industrialization in British Reign.
The reasons as to why Irish citizens immigrated was to escape religious and political persecution. The Irish Potato Famine was another reason for this because potatoes were the staple food at the time which forced peasants to leave Ireland.