Which movements are used to align a platoon?

The correct choice focuses on the various commanded movements that are essential for conducting precise alignment within a platoon. "Dress Right Dress" and "Dress Left Dress" are crucial commands that enable Marines in a formation to adjust their positions relative to one another, ensuring they are lined up correctly.

"At Close Interval Dress Right Dress" and "At Close Interval Dress Left Dress" allow for adjustments in formations that are in closer proximity to each other, ensuring that all members maintain their alignment even with limited space. This level of precision is vital in military formations, where cohesion and uniformity are critical during drills, ceremonies, or tactical formations.

Understanding the commands and their applications is crucial for maintaining discipline and order within the platoon, which contributes to overall effectiveness in various military operations. The other options involve movements that do not fully encapsulate the comprehensive alignment process needed for a platoon.