In a GOMS Description, the Role of Operators Is

Multiple Choice

In a GOMS description, the role of operators is:

A) to specify what the user wants and intends to achieve;
B) to act as the building blocks for describing human-computer interaction at the concrete level;
C) to predict which method will be used in specific situations;
D) to operate the computer automatically without commands from the user;
E) to act as an assistant for the user during his/her interaction with the computer.