Which of the following is/are NOT the feature of foot loose industry?

They are generally polluting industries

The correct answer is Option 4: They are generally polluting industries

NCERT: Foot loose industries can be located in a wide variety of places. They are not dependent on any specific raw material, weight losing or otherwise. They largely depend on component parts which can be obtained anywhere. They produce in small quantity and also employ a small labour force. These are generally not polluting industries. The important factor in their location is accessibility by road network.