The correct answer is (b) Plan Bee.
Plan Bee is a unique strategy adopted by the North-East Frontier Railway (NFR) to keep wild elephants away from railway tracks. The strategy involves using beehives to deter elephants from crossing the tracks. The beehives are placed on the tracks, and when an elephant approaches, the bees are released and chase the elephant away.
Plan Bee has been successful in reducing the number of elephant-train collisions in the NFR region. In the first year of the program, there were no collisions between elephants and trains in the areas where Plan Bee was implemented. This is a significant improvement from the previous year, when there were 10 collisions between elephants and trains in the same areas.
Plan Bee is a cost-effective and humane way to keep elephants away from railway tracks. The beehives are relatively inexpensive to purchase and maintain, and the bees do not cause any harm to the elephants. In fact, the elephants eventually learn to avoid the beehives and the tracks altogether.
Plan Bee is a win-win solution for both the elephants and the NFR. The elephants are safe from being hit by trains, and the NFR is able to operate its trains without fear of collisions.
The other options are incorrect.
(a) Plan Flee is a strategy that involves using loud noises to scare elephants away from railway tracks. This strategy is not as effective as Plan Bee, as elephants can become habituated to the noise.
(c) Plan Tea is a strategy that involves planting tea bushes along railway tracks. This strategy is not as effective as Plan Bee, as elephants are not deterred by tea bushes.
(d) Plan Sweep is a strategy that involves using bulldozers to clear vegetation along railway tracks. This strategy is not as effective as Plan Bee, as elephants can easily cross through cleared areas.