Which of these needs to be enabled in Cisco Unified Communications Manager in order for the Cisco TelePresence System 500-32 to be able to share a presentation with a Cisco TelePresence System Codec…

iX application media is a Cisco-proprietary channel used for TelePresence Active Control features such as participant lists and meeting controls, not for presentation content sharing.

Sending send-receive SDP in mid-call invites controls SDP offer/answer behavior during call modifications and does not specifically enable presentation sharing.

BFCP is the IETF-standard floor control protocol (RFC 4582) used for content sharing in video conferencing. Enabling 'Allow presentation sharing using BFCP' in the CUCM SIP profile allows the CTS 500-32 to negotiate and send presentation content to VCS-registered endpoints, which also rely on BFCP for this capability.

H.235 is an ITU-T standard for security and encryption in H.323 environments and has no function related to presentation sharing.

Delivering a conference bridge identifier is a CUCM feature for passing bridge information in calls and is unrelated to enabling endpoint-to-endpoint presentation sharing.