The phrase "which reaffirms" is correct and can be used in written English.
It is typically used to introduce a clause that provides further evidence or support for a previous statement. Example: "She received a promotion at work, which reaffirms her dedication and hard work."
That's according to a recent scientific advisory from the American Heart Association, which reaffirms a long-held observation about the health benefits of seafood.
The encores started as a respite, beginning with optimism and a country-gospel beat: "On Up the Mountain," which reaffirms faith, and "Something Good This Way Comes," about a satisfied life.
Chief Judge Kozinski said he was "pleased" with the decision, which "reaffirms what I have said all along about my private files: They were kept on a private server and were not intended to be shared publicly".
The formation constant of iFc+⋅ClO−4on pairs in the organic phase was found to be much larger than that in aqueous medium, which reaffirms the predominant influence of the microenvironment around the redox centers (organic medium vs. aqueous electrolyte).
Senator Tom Cotton, issued a statement saying: "I commend President-elect Trump for his conversation with President Tsai Ing-wen, which reaffirms our commitment to the only democracy on Chinese soil".
Chechen representatives loyal to Moscow met in Chechnya yesterday and endorsed a draft of the proposed constitution, which reaffirms the republic's status as an integral part of the Russian Federation.
The last was the 2000 Durban Declaration, which reaffirmed that H.I.V. was the cause of AIDS.
The President agreed to sign onto a final communique, which reaffirmed NATO's broad goals.
It's also nice that she has great testimonials on her site which reaffirm how talented she really is.
To highlight the issue, we conducted a poll through ComRes, which reaffirmed what we have long suspected.
1209, which reaffirmed that the trustees must act solely in the interest of the trust beneficiaries, see H.R.Rep.No.96-869, pt. 1, p. 67 (1980), U.S.Code Cong.
