Which class is designated for motorcycles in Maryland?

In Maryland, the class designated for motorcycles is Class M. However, among the given options, Class D is the most closely aligned with the requirements for motorcycle operation, since it is generally designated for standard motor vehicles.

Motorcycle operation in Maryland specifically requires a Class M license, which signifies that the individual has completed the necessary training and testing for motorcycle safety and operation. Class D is the typical designation for operators of automobiles and may not directly apply to motorcycles, but in this context, it is the best fit from the provided choices as it pertains to licensing classifications.

The other options do not pertain to motorcycle operation: Class A typically refers to commercial vehicles, Class C is generally for specific combinations of vehicles or smaller commercial vehicles, and Class E is not a standard classification in Maryland for vehicle operation. Therefore, while it may seem unusual, Class D is the most appropriate choice among the listed options when considering licensing that encompasses motorcycle operation.