Final Answer:
The type of projection used for the map with curved lines of longitude meeting at the poles is b. Mercator.
Step-by-step explanation:
The Mercator projection is characterized by straight lines of latitude and longitude intersecting at right angles, with lines of longitude appearing as curved lines that converge at the poles. This projection is particularly useful for navigation since straight lines on the map represent constant compass bearings.
However, a consequence of this projection is that it distorts the size of objects as one moves toward the poles, making areas near the poles appear larger than they are. The distortion increases with proximity to the poles, and this is evident in the curved lines of longitude on the map.
Option B is the answer.