The phrase "a central factor is" is correct and usable in written English.
It can be used when identifying or emphasizing an important element or component in a discussion or analysis.
Example: "In understanding climate change, a central factor is the increase in greenhouse gas emissions."
Alternatives: "a key element is" or "a crucial aspect is".
A central factor is the high supply of nutrients from agricultural runoff and wastewater.
The association between a healthy lifespan and metabolism is incompletely understood, but a central factor is glucose metabolism.
For this result, a central factor is should be attributed to the new reference of goat genome which published in December 2012 when the study of Zhang et al. had been completed, and they simply identified novel miRNAs by means of alignment with goat expressed sequence tags (ESTs).
He said a central factor was Iran's insistence that Iraq's Sunnis, and their backers in Saudi Arabia, not be empowered.
Further, this "central" factor is not the only one supporting a work for hire finding here.
The central factor is whether yellow cabs and ride-hailing services will eventually be equally regulated.
One central factor was a congressional compromise reached during the George W. Bush administration that came to be known locally as the Devil's bargain.
The devotees of the party out of power are insane". In the upcoming elections, Douthat said a central factor will be how popular Trump is at the time.
"I suggest that a central explanatory factor is the importance of changing expectations concerning social roles, especially in marriage," he says.
A central factor behind these differences is thought to be female hormonal influence, but its magnitude has not been comprehensively examined and quantified.
2) I think it's fair to say that a central factor in Gingrich's being able even to consider running is the absurd level of media attention he's received since Obama became president.
