The phrase "a matter of selection" is correct and usable in written English.
It can be used when discussing choices or decisions that need to be made among various options.
Example: "Choosing the right candidate for the job is often a matter of selection based on skills and experience."
Alternatives: "a question of choice" or "an issue of selection".
As such, the act of making photographs is essentially a matter of selection and composition, a game of inclusion and exclusion.
Set it up, he says, so promotions are a matter of selection, not elimination, and the Steves of the world have little incentive to wipe out anyone's hard drive.
The learning is a matter of selection from, not extension to, the existing repertoire; and this may be based on relatively simple cognitive mechanisms [22], [23], [59], [61], [66].
The most recent and largest epidemiological study supports that this association is not a matter of selection because despite adjustment for multiple potentially confounding lifestyle factors and health conditions, vigorous exercise activity was associated with an increased risk of developing AF.
The reason the current population is comprised entirely of accelerated silicosis, may be a matter of survival selection, that is, the acute silicoproteinosis cases did not survive to be included in the study.
In many years, logging selection is a matter of selecting from among the best of what is left from more preferable jobs.
Which one to prefer may, for those without strong previous commitments regarding the nature of selection, therefore be a matter of choice between a progressive and a conservative interpretation.
Ultimately, as in any decision making process, Dutch MPA site selection was a matter of choice between alternatives.
Of these, for example, Aberg et al (1980) and Aberg (1997) argued that apparent longer-than-expected survival is a matter of case selection.
It is a matter of natural selection.
But it may also be a matter of false selection.
