Correct option is B
The correct answer is Four.
Naval parades typically involve a procession of military personnel and equipment, often to showcase the strength and readiness of a country's naval forces. In this particular parade, the number of platoons marching behind the leader is the key factor being considered. The options provided range from three to seven platoons, with the correct answer being four. It's possible that the number of platoons was chosen to represent a specific numerical significance or to create a visually pleasing formation. Platoons are typically composed of smaller groups of soldiers or sailors and are used for organizational and tactical purposes within military units.