The phrase "a single course of action" is correct and usable in written English.
You can use it when referring to one specific method or approach to achieve a goal or solve a problem.
Example: "After considering all options, we decided to pursue a single course of action to address the issue effectively."
Alternatives: "one course of action" or "a solitary approach".
In fact, her world has irreversibly tilted and her mind is now set on a single course of action.
What soon becomes apparent – to us, at least – is that his brain episodes are schizophrenic, during which he is consumed by a single course of action: "he had to kill Netta Longdon".
Despite the number of critics seeking to hold to the classical "unities"—i.e., the notion that a play should concern a single course of action set in one day, in one place popular sentiment inspired plays with numerous settings.
No doubt, they will all agree on a single course of action to get the city through its fiscal distress: Cut some other guy's program, but don't ask me to make a sacrifice.
Later work by McGuiness and Foy [24] added the resolution of the situation (Level 4 SA), which is deciding on a single course of action from a set of possible actions to achieve the required outcome to the situation.
In my mind, a lawyer was someone who took a business situation, married that business understanding to a legal perspective to it and gave you a single course of action as a recommendation.
There's no single course of action, no one brilliant initiative, that will save the elephants of Africa.
The latter are built with a single course of bricks.
In 1982, the two courses were combined into a single Course of Specialization in Public Health.
The games we've modeled to this point have all involved players choosing from amongst pure strategies, in which each seeks a single optimal course of action at each node that constitutes a best reply to the actions of others.
These latter theories relate the selectivity of attention to the selectivity required to maintain a single coherent course of action, or to competition between mutually inhibitory streams of processing.
