The phrase "a critical supporting" is correct and usable in written English.
It can be used when describing something that plays an essential role in supporting a main idea, argument, or structure.
Example: "The research provided a critical supporting framework for the theory presented in the paper."
Alternatives: "an essential supporting" or "a vital supporting".
The reality is that for the summit to succeed, business leaders must and will stand shoulder to shoulder with world leaders and play a critical supporting role in empowering national governments to agree a path to prosperity for us all.
The reality is that for the summit to succeed, business leaders must and will stand shoulder to shoulder with world leaders and play a critical supporting role in empowering national governments to agree on a path to prosperity for us all.
Continued Chinese expansion is a critical support for the troubled global recovery, but some deceleration is helpful.
Though the J-WAFS Solutisns program is a critical support for entrepreneurially-minded MIT faculty and students, the mission is about more than innovation.
But white working-class voters represent a critical support base for the Republican Party — and increasing numbers of them are shopping for an alternative with whom they feel some semblance of an emotional connection.
Mentors must also be committed to helping mentees build a critical support network of allies and champions.
The green line in the chart is Apple's 200 day moving average, which can be a critical support level, if it holds.
As such, near-peer mentoring relationships can provide a critical support for students who are typically underrepresented in the physical sciences.
Earlier in the week, the Russell 2000 broke below a critical support level at 740, and now the Dow Jones and S&P 500 are sitting right at their relative support levels.
Best of all, displaced family networks -- often a critical support system -- are kept together but away from a risky environment.
