The phrase "acceptable course" is correct and usable in written English.
It can be used to refer to a method or approach that is deemed appropriate or satisfactory in a given context.
Example: "After reviewing the options, we concluded that pursuing an acceptable course of action is essential for the project's success."
Alternatives: "suitable approach" or "appropriate method".
That is the only acceptable course.
"It's just not an acceptable course of action".
There's some circumstances where maybe trying to argue the case or argue the point is an acceptable course of action.
"As a humane and responsible government, we are left with no acceptable course of action except to close this industry down," Baird said in a statement.
They said they had taken evidence from a recent study by the University of Bristol that exposure to suicide content, including reading about others' attempts, had served to validate or justify suicide as an acceptable course of action.
"The only acceptable course is for WikiLeaks to take steps immediately to return all versions of all of these documents to the U.S. government and permanently delete them from its Web site, computers and records," he said.
The formulation of policies requires the selection and configuration of effective and acceptable courses of action to reach explicit goals.
Or, if it is, I'm going to sue my mother for all those childhood days that she thought "fruit" was an acceptable second course.
As long as it's acceptable, of course.
It comes down, as so often, to a matter of fine judgement regarding what the solver would consider acceptable, and of course bearing in mind the fact that acceptability changes with time.
The National Collegiate Athletic Association has redefined what constitutes an acceptable high school course for incoming college athletes, ending more than four years of battle with parents and school officials who complained that the course parameters were arbitrary and often irrelevant.
