Step 1: The cotton textile industry in Mumbai thrives due to specific conditions.
- (b) Humid climate: Prevents thread breakage during spinning/weaving.
- (c) Market: Large local and export markets support demand.
- (d) Supply of labour: Abundant skilled/unskilled labor in Mumbai.
Step 2: Mineral (a) is incorrect, as the cotton textile industry relies on cotton (an agricultural product), not minerals, unlike industries like steel.