The phrase "a decision for which" is correct and usable in written English.
It can be used when referring to a specific decision and the context or reason behind it.
Example: "This is a decision for which we must take full responsibility."
Alternatives: "a decision that" or "a decision regarding which".
It was a decision for which Warsaw would pay dearly.
"If they do not, then that is a decision for which they are accountable to their electorates,'' Sinodinos said.
Commander Fargo took about a week to make a decision for which he was given 30 days.
A county clerk from rural Kentucky, Davis refused to grant marriage licenses to same-sex couples, a decision for which she was jailed.
But Mr. Giuliani did not say he regretted releasing Mr. Dorismond's juvenile police record, a decision for which he was roundly criticized.
But how much state intervention is necessary to guarantee fundamental civil rights is a decision for which the state alone can be responsible.
She is restrained in her telling--the book is filled with vivid details and facts, rather than emotional outpouring--a decision for which her narrative is only the more powerful; but her position as someone who fully understands both America and Iran affords her the opportunity to elucidate, for American readers, some of the apparent mysteries of her native culture.
At a panel session this morning, my colleague Christopher Hayes pointed out that when F.D.R. created the Works Progress Administration in 1935, he set up its funding to ensure that it could not be captured by his own party's patronage machines--a bold decision for which he was rewarded.
It was simply the sort of choice you made, a hard decision for which there would be consequences, the sort of decision that showed you your life was different from what you'd always thought it was.
Extending any prediction to individual patients remains a clinical decision for which specific outcome indicators provide little help.
Embarking on an ambitious – perhaps unachievable – reform of franchising, in haste, on the UK's most complex piece of railway was an irresponsible decision for which ministers were ultimately responsible.
