The question asks about the distance between two consecutive longitudes at the Poles, specifically between longitudes 91° E and 92° E.

To understand the distance between longitudes, let`s first understand what longitudes are. Longitudes are the lines that run vertically on the Earth`s surface and are used to measure east-west positions. The prime meridian, located at 0° longitude, serves as the starting point for measuring longitudes.

As we move away from the prime meridian towards the east or west, the longitudes increase or decrease respectively. Each degree of longitude represents 111 kilometers of distance at the equator. However, as we move towards the poles, the distance between consecutive longitudes decreases. This is because the Earth`s shape is not perfectly spherical but slightly flattened at the poles.

Therefore, at the Poles, the distance between two consecutive longitudes would be negligible or even zero, as mentioned in option 1 (0 km). This is because the lines of longitude converge at the Poles, making the distance between them very small.

Hence, the correct answer is 0 km, as provided in option 1.