Explanation:

The flying shuttle allowed a single weaver to weave much wider fabrics, and it could be mechanized, allowing for automatic machine looms.

A cotton gin – meaning "cotton engine" – is a machine that quickly and easily separates cotton fibers from their seeds, enabling much greater productivity than manual cotton separation.

The spinning jenny is a multi-spindle spinning frame, and was one of the key developments in the industrialization of weaving during the early Industrial Revolution. 

A printing press is a mechanical device for applying pressure to an inked surface resting upon a print medium, thereby transferring the ink. So, Option 2 is correct.