In an "annular" pattern, rivers flow like a ring. This means that the rivers follow a circular or curved path, resembling the shape of a ring. They may start from a central point and flow outward in a circular manner, or they may form a circular loop or loop system. It is important to note that this pattern does not indicate a specific direction in which the rivers flow. Therefore, options 1, 2, and 4 are not accurate. Option 3 correctly describes the annular pattern, highlighting the circular or ring-like flow of the rivers.