Explanation:

Pod borers are a group of insect pests, primarily from the genus Helicoverpa (e.g., Helicoverpa armigera), that cause significant damage by feeding on the pods and seeds of leguminous crops. Option (2) 'Lentils' are legumes and are highly susceptible to pod borer infestation, along with other pulses like chickpeas, pigeon peas, and soybeans. Option (1) 'Wheat' and (3) 'Maize' (corn) are cereal crops, primarily affected by pests like stem borers or earworms, but not typically pod borers. Option (4) 'Potato' is a tuber crop, which is affected by pests like potato tuber moths or Colorado potato beetles, not pod borers. Therefore, lentils are a common host for pod borers.