Option 2 is the correct answer. Here`s why:

Option 1 suggests that Cracking is associated with Copper, Smelting with Petroleum, Hydrogenation with Rubber, and Vulcanization with Edible fats. This is incorrect, as Cracking is a process used in Petroleum industry, not Copper. Smelting is generally used for extraction of metals, not Petroleum. Hydrogenation, involving the addition of hydrogen, is a process applied in the edible fats industry, and Vulcanization is a process applied to Rubber to improve its properties, hence these do not match accordingly.

Option 2 indicates that Cracking is associated with Petroleum, Smelting with Copper, Hydrogenation with Edible fats and Vulcanization with Rubber. This is correct as per the application of these processes in the respective industries.

Option 3 wrongfully suggests that Hydrogenation is associated with Rubber which is not the case.

Option 4 mistakes the associations between Cracking and Copper, and between Hydrogenation and Edible fats.

Therefore, the correct match is Option 2.