B. Mumbai
Mumbai has the cotton textile industry in the largest concentration due to following factors:
i). Availability of raw materials: There is large scale production of cotton in this region. Hence, there is regular supply of raw materials.
ii). Favorable climate: This region has an equitable climate which ensures the production of cotton.
iii). Export facility: Mumbai is the major seaport of India. Through it good quality cotton, machines and raw materials are easily imported, and finished products can be easily exported.
iv). Availability of capital: A large amount of capital is also required for the establishment of textile industry, and the required capital is also available in the markets.