Aresponse options calculator (roc) can be used when responding to an oil spill to predict how the oil will change over time and determine which methods can be best used to clean it. what is the benefit of this type of tool?
a.) it allows the oil company to determine the amount of their losses.
b.) it measures the weather conditions to let responders know if they can start cleaning.
c.) it save time and money by finding the most effective clean up methods.
d.) it assesses how many people will be needed to completely clean up the entire spill.

Option C, It helps save time and money by finding the most effective clean up methods.

Explanation:

Response Options Calculator (ROC)  is a simulation tool that helps in measuring the performance of the oil mill response system based on the information given to the  system. It contain a database  of oil and its products and thus allows one to add a response system of its own and asses its applicability and feasability. ROC helps in accessing the time period during which the oil spill can be recovered and dispersed before it starts creating nuisance in the water body on getting exposed to the local environmental conditions.

Hence, option C is the correct answer

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they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.