Which of the following cloud deployment models represents a composition of two or more clouds that remain unique identities but are bound together by standardized or proprietary technology that…

A public cloud is provisioned for open use by the general public and owned by a cloud provider - it does not involve a composition of multiple distinct cloud infrastructures.

The NIST definition in SP 800-145 precisely describes hybrid cloud as a composition of two or more clouds - private, community, or public - that remain unique entities but are bound together by standardized or proprietary technology enabling data and application portability. This definition matches the question stem exactly and is the authoritative industry standard.

A community cloud is provisioned exclusively for a specific group of organizations sharing common concerns, not a composition of multiple distinct cloud types.

'Segregated cloud' is not a recognized cloud deployment model in either NIST SP 800-145 or CSA definitions.

Hybrid cloud (choice B) is the correct and formally recognized deployment model matching this definition, so 'None of the above' is incorrect.