Constraints: High bandwidth, low latency, secure private connection, redundancy.

Option A: Single VPN Connect offers security but lacks high bandwidth, low latency, and redundancy—unsuitable for migration needs.

Option B: Multiple VPNs improve redundancy but still rely on public internet, limiting bandwidth and latency performance compared to dedicated circuits.

Option C: Single FastConnect provides high bandwidth, low latency, and privacy via a dedicated line, but lacks redundancy.

Option D: Multiple FastConnect circuits ensure high bandwidth and low latency with redundancy. Adding multiple VPNs as backup enhances resilience, meeting all constraints.

Conclusion: Option D is the most suitable and resilient, balancing performance and continuity.

Oracle states:

"FastConnect provides a private, high-bandwidth, low-latency connection to OCI. Use multiple circuits for redundancy."

"Combine FastConnect with IPSec VPN for additional failover options."Option D aligns with this guidance. Reference:FastConnect Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/fastconnect.htm).