B. Most of the fishermen and the anglers like to preserve the flora and fauna of the southern rivers because Tharanga is very much in demand locally.
Feedback According to choice (a), the fishermen and the anglers will not be able to catch Suplora. This weakens the prediction of the fisheries department. According to choice (b), the local people also wish to conserve the rivers. From this it can be said that the local people would definitely report if they catch Suplora. Hence, (b) provides support to the prediction of the department.
Choice (c) does not state whether the department will receive information from the fishermen and the anglers.
According to choice (d), the fishermen will not be able to catch Suplora and hence the department my not receive expected feedback. This weakens the prediction of the fisheries department.
Choice (e) does not state whether the local fishermen and the anglers are interested in conservation of Tharanga. This does not strengthen the prediction of the fisheries department.
Hence (b) provides most support to the prediction of the fisheries department that their action will produce desired result.