In the question below, a passage is given followed by three statements which may or may not be a suitable course(s) of action. A course of action is a step or administrative decision to be taken for improvement, follow-up, or further action in regard to the problem. Select the correct combination of statements. Passage: A health department report has revealed that over 50% of the residents in a major industrial suburb are suffering from chronic respiratory ailments. The report attributes this to the high levels of particulate matter (PM 2.5) released by local manufacturing units and the lack of green cover in the residential zones. Proposed Courses of Action: 1. All manufacturing units in the suburb should be shut down immediately and permanently to ensure the health of the residents. 2. The government should mandate the installation of advanced air-filtration chimneys in all local factories and conduct monthly emission audits. 3. A large-scale plantation drive should be initiated to create "green buffers" between the industrial zones and residential colonies.