The phrase "a case of choosing" is correct and usable in written English.
It can be used when discussing a situation that involves making a choice or decision among options.
Example: "In this project, we find ourselves in a case of choosing between two equally beneficial strategies."
Alternatives: "a matter of selection" or "an instance of deciding".
"Then it's a case of choosing the right toppings.
Sometimes it seems more like a case of choosing your poison.
Although looking after children is something we both genuinely love, it's hard work – most definitely not a case of choosing the easier option.
You don't have to telephone ahead to reserve your place, so it was a case of choosing where we wanted to stay each night.
But it's not simply a case of choosing any UK fund to make your pension pot bubble up; not all of them have done well.
The Council's extension of term limits, he said in 2008 after the deed was done, was a case of "choosing substance over process and pragmatism over ideology".
Alas this 2016 Republican presidential campaign is a textbook case of choosing fear -- with proposals denying Muslim refugees entry to the US, banning Muslims from coming to America, creating a Muslim registry and more echoes of the darkest nativist impulses.
This is not a case of MBAs choosing to earn quick money in consulting, finance or service industries, before moving on to worthier business in their later years, believes Gregg Schoenfeld, director of management education research at GMAC.
Atlanta housing officials, even today, paint this change as a case of people choosing to leave for better opportunities and note that the residents of Techwood and Clark Howell had voted to approve the plan that led to the demolition.
In the case of choosing a poster or a shirt, it's often best.
As an instance, in the case of choosing the Gaussian kernel as the base function, we should try in finding the optimal value of the width; since this parameter which is equivalent to the Gaussian standard deviation indicates the openness of the Gaussian function and the neighborhood area affected by the defined kernel that will influence the final clustering results significantly.
