Answer the following question given this paragraph: 

One of the most effective ways to cut metal is with an oxy-acetylene torch. Very high temperatures are obtained when acetylene burns in oxygen. Mixed 1:1 with oxygen, a temperature of over 3000°C can be achieved. The amount of energy released is high – the net heat of combustion is 1300 kJ/mole. Safety precautions need to be observed since the gas is very explosive. For welding and cutting, the oxy-acetylene torch is one of the best ways to go.


Q: An oxy-acetylene torch is an effective way to cut what?

 Choices:

- coal

- wood

- plastic

- metal

A:
metal
