The phrase "a single concern" is correct and usable in written English.
It can be used when referring to one specific issue or matter that is being addressed or considered.
Example: "In the meeting, we focused on a single concern that had been raised by the team regarding project deadlines."
Alternatives: "one issue" or "a sole concern".
Baku XXI Century, zqan, and Baghlan have so many overlapping interests that they often seem to operate as a single concern.
Erste Bank has already offered, should it lose, to make the Haftungsverbund more like a single concern by strengthening its grip on the savings banks.
Some new construction is taking place, but more than a million square feet of existing offices along the route have been acquired by a single concern: the 26-year-old Davis Companies of Boston and Wilton.
We watch him on Canadian television, cheekily telling an interviewer, "I haven't a single concern" except to discover each morning whether he has woken in "a state of grace".
He wrote: I was guided, in my approach, by a single concern: not to do anything that could make the situation worse in this hostage-taking and, on the other hand, not cut the line that he had himself decided to create with the outside.
It can be defined as the degree to which a module is focused on a single concern of software.
The arbitrary enforcement of a law against a single business in a single state raises equal-protection concerns.
"Over the next year there'll be all sorts of pressures coming from all sorts of directions on Labour to have an answer to every single concern that people raise.
She said the international community must view Afghanistan and Pakistan as a "single strategic concern".
"In our marriage, there has not been a single ethics concern, because all the expectations were hashed out in the beginning," Mr. Kapadia said.
Even more importantly, to our knowledge, there has not been a single safety concern in the field related to Model 3 batteries at any point over the six months of Model 3 production.
