Option 1 suggests Catla and Trout are bred exclusively in cold regions of India. Catla is actually a warm water fish common throughout India, making this option incorrect.
Option 2 proposes the same groups as Option 1 and is also incorrect due to the classification of Catla as a warm water fish.
Option 3 includes Tinca and Trout. Tinca, also known as Tench, is a fish species that prefer cooler waters and Trout are famously cold water fish. So, both these species are bred in the colder regions making this option correct.
Option 4 states that Bhekti and Trout are exclusive to cold regions. Bhekti, also known as Barramundi, is a catadromous fish, inhabiting both fresh and saltwater but it`s not exclusive to cold regions, making this option incorrect.
In summary, option 3 is the correct choice because both Tinca and Trout are bred in the colder regions.