All applicants is everybody, including VAWA, General Provision, Marriage based, Military provision etc. It says there is required evidence for all applicants when it comes to marital status. Just like all applicants (including VAWA) must submit front and back of their GC with N-400. I'm not talking about evidence of bonafide marriage etc. Simply doc that proves marital status.
Married - marriage certificate
Divorced - divorce certificate.
I applied under general provision. I got GC through spouse, and still married to same spouse. I provided same marriage certificate for I-485 and N-400.
The naturalization certificate shows marital status at time of naturalization. N-400 form asks for marital status even if filing under VAWA. The certificate (marriage or divorce) is proof of marital status.