One of the advantages of the crossflow mechanical draft tower over the counterflow tower is the:

The crossflow mechanical draft tower is designed so that air flows horizontally through the fill media while the water flows downward. This configuration allows for a low pressure drop in relation to its capacity because the air and water do not flow in opposition to one another as in counterflow designs.

In a counterflow tower, the water flows down while the air enters from the bottom and moves upward, which can create higher resistance to airflow and therefore a higher pressure drop. Lower pressure drops in crossflow towers translate to improved efficiency and performance since the fans do not need to work as hard to move the air through the system.

This design characteristic means that crossflow towers can effectively handle large volumes of water and air with less energy consumption related to the fan operations, making option B the most advantageous aspect in comparison to counterflow designs.