Who launched an attack on Constantinople? What happened? Why is Constantinople so important?
( collapse of Byzantine empire)

Option D.

Explanation:

people who produce goods out of their homes, is the right answer.

The small-scale decentralized production house usually run by a home rather than a factory means, is known as a cottage industry.

In simple terms, a cottage industry is an industry which is primarily based on the production of goods and which includes people working from their homes and not from a factory. This term in a more general sense is used to describe those people who are engaged in part-time jobs such as lace-making, sewing, household manufacturing and electronics etc.