In the activity MAPA, what are the steps that need to be followed? Step 1: Description of the enterprise and elaboration of the productive process ...

In the activity MAPA, what are the steps that need to be followed?
Step 1: Description of the enterprise and elaboration of the productive process flowchart.
Step 2: Diagnosis of solid waste.
Step 3: Diagnosis of liquid effluents and atmospheric emissions.
Step 4: Pollution control measures/actions.

a) Only step 1 needs to be followed.
b) Steps 1, 2 and 3 need to be followed.
c) All steps need to be followed.