The phrase "approach for which" is correct and usable in written English.
It can be used when referring to a specific method or strategy that is relevant to a particular situation or context.
Example: "The approach for which we have gathered data will help us understand the underlying trends in consumer behavior."
Alternatives: "method that" or "strategy for which".
This was, and remains, a broadly justifiable approach, for which the home secretary, Theresa May, deserves respect.
But as it has turned out, most people prefer a "set it and forget it" approach, for which target-date funds are ideal, he said.
It is an approach for which Elliott Sroka and Alan Inkles, executive directors of Tilles and Staller Centers, respectively, do not apologize.
The campaign, the biggest ever for the brand, will continue with the gimmick-free approach for which John Smith's has become famous.
So all-consuming was his admiration for Parker that he emulated not just the musical approach for which Parker was celebrated but also the heroin habit for which he was notorious.
Kaufman's appointment is said to mark a shift from attempts to adapt the book as a serious drama towards a more satirical, quirky approach for which the screenwriter and director seems well suited.
Steinman would be the only patient in this makeshift trial, but the personalized approach for which he would serve as both visionary and guinea pig has implications for the rest of us.
When pressed by Mr. Stephanopoulos over his opposition to the auto bailout, Mr. Romney criticized both President Obama and President George W. Bush, before arguing that the managed bankruptcy approach for which he argued was ultimately what occurred.
In turning to workers to be the mainstay of its ads, Red Lobster is playing down an approach for which it has long been known: commercials celebrating lavishly photographed food.
For the first two and a half years of Mr. Bush's presidency, Ms. Rice often seemed hesitant to take a more active role, eschewing the kind of hands-on approach for which Henry A. Kissinger and other national security advisers were known, and viewing her job chiefly as providing quiet advice to Mr. Bush.
Here was a South African captain who was prepared to go beyond the conservative, give-nothing approach for which most of his predecessors have been renowned, in order to resuscitate a dormant game of cricket – a sentence which has a curiously familiar ring.
