Which of the following types of rivers is most likely to meander?

Meandering rivers are typically found in older stages of river development. As a river ages, the gradient becomes less steep, and the flow velocity decreases, allowing the river to evolve into broader, slower-moving bends. This process is influenced by erosion and deposition along the banks, causing the river to carve out curves and loops over time.

In contrast, younger rivers are characterized by steep gradients and typically flow in straighter paths as they cut through the landscape, which leads to less meandering. Steep rivers also have higher velocities and more energy, contributing to straight channels and minimal meandering. A straight river, by definition, does not exhibit the curves and bends typical of a meandering river.

Thus, an old-age river is primarily responsible for developing a meandered pattern due to its lower energy, increased sediment deposition, and the natural progression of its channel shape over time. These characteristics make it the best choice for a river likely to meander.