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__ Made It Possible for Air-cor Doning Systems to Be Used by Consumers with No Apparent Harm,unlike the Ammonia Systems. A. MILs B.

Problemas

__ made it possible for air-cor doning systems to be used by consumers with no apparent harm,unlike the ammonia systems. a. MILs b. DTCs c. CFCs d. EPAs

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Respuesta

'C'

Explicación

## Step 1The problem is asking us to identify the substance that made it possible for air-conditioning systems to be used by consumers without causing apparent harm, unlike the ammonia systems. The options provided are MILs, DTCs, CFCs, and EPAs.## Step 2We need to understand what each of these abbreviations stands for. MILs stands for Military, DTCs stands for Direct-to-Consumer, EPAs stands for Environmental Protection Agency, and CFCs stands for Chlorofluorocarbons.## Step 3Among these options, CFCs are known to be used in air-conditioning systems. They are non-toxic, non-flammable, and non-corrosive, which makes them safe for use in these systems.## Step 4Moreover, CFCs are not harmful to the environment, unlike ammonia systems. Therefore, the answer is CFCs.