https://www.cisco.com/c/en/us/support/docs/security/dynamic-multipoint-vpn-dmvpn/111976-dmvpn-troubleshoot-00.html

https://www.cisco.com/c/en/us/support/docs/security-vpn/webvpn-ssl-vpn/119417-config-asa-00.html#anc15:~:text=simultaneous%2Dlogins%2020-,WebVPN%20Clients%20Cannot%20Hit%20Bookmarks%20and%20is%20Grayed%20Out,-Problem

The correct answer is D.
IKEv2 profile. A FlexVPN tunnel requires an IKEv2 profile to define the parameters for the IKEv2 negotiation and the IPsec security association. The IKEv2 profile references the IKEv2 keyring, the authentication method, the identity of the peers, and other options. The IKEv2 profile is then applied to a virtual tunnel interface (VTI) or a dynamic virtual tunnel interface (DVTI) to protect the tunnel with IPsec12. An EAP configuration is used for authentication with Extensible Authentication Protocol (EAP), which is optional for FlexVPN3. A multipoint GRE tunnel interface is used for DMVPN, not FlexVPN. An IKEv1 policy is used for IKEv1, not IKEv2, which is the protocol for FlexVPN.

one benefit of GET VPN is Simplified network design due to leveraging of native routing infrastructure (no overlay routing protocol needed) f mismatch is causing the problem with the IPsec VPN

B) Prefilter policy is a type of policy that allows you to perform fast actions on traffic before it reaches the Access Control policy. You can use prefilter rules to drop, fastpath, or trust traffic based on simple criteria, such as IP addresses or ports. However, prefilter rules do not support URL filtering, so you cannot use them to block traffic based on the website domain3.
C) DNS policy is a type of policy that allows you to inspect and modify DNS requests and responses on your network. You can use DNS rules to block, monitor, or sinkhole DNS queries based on the requested domain name or the response IP address. However, DNS policy does not prevent packets from being sent to the malicious site; it only prevents the DNS resolution of the domain name. A client could still access the site if they know the IP address or use an alternative DNS server.
D) SSL policy is a type of policy that allows you to decrypt and inspect encrypted traffic on your network. You can use SSL rules to determine which traffic to decrypt based on various criteria, such as certificate attributes, cipher suites, or URL categories. However, SSL policy does not block traffic; it only decrypts it for further inspection by other policies.
Explanation:
The correct answer is A.
Access Control policy with URL filtering. An Access Control policy is a type of policy that allows you to control how traffic is handled on your network based on various criteria, such as source and destination IP addresses, ports, protocols, applications, users, and URLs. URL filtering is a feature that enables you to block or allow traffic based on the URL category or reputation of the website. You can create custom URL objects to specify the exact URLs or domains that you want to block or allow. For example, you can create a URL object for https:/www.badsite.com and set it to block. This will prevent any traffic from reaching that site and any subdomains under it12.