You are configuring SD-WAN to load balance network traffic.

According to theSD-WAN 7.6 Core Administratorstudy guide and theFortiOS 7.6 Administration Guide, configuring load balancing within SD-WAN rules requires an understanding of how the engine selects and distributes sessions across multiple links.

SLA Target Logic (Option A): In FortiOS 7.6, theLowest Cost (SLA)strategy has been enhanced. When the load-balance option is enabled for this strategy, the FortiGate does not just pick a single "best" link; it identifiesall member interfaces that currently meet the configured SLA target(e.g., latency < 100ms). It then load balances the traffic across all those healthy links to maximize resource utilization.

Hash Modes (Option D): When an SD-WAN rule is configured for load balancing (valid forManualandLowest Cost (SLA)strategies in 7.6), the administrator must define ahash modeto determine how sessions are distributed. While "outsessions" in the question is a common exam-variant typo foroutbandwidth(or sessions-based hashing), the core principle remains: you can select the specific load-balancing algorithm (e.g., source-ip, round-robin, or bandwidth-based) forall strategieswhere load-balancing is enabled.

Why other options are incorrect:

Option B and C: These options are too restrictive. InFortiOS 7.6, load balancing is not limited to only "manual and best quality" or "manual and lowest cost" in a singular way. The documentation highlights thatManualandLowest Cost (SLA)are the primary strategies that support the explicit load-balance toggle to steer traffic through multiple healthy members simultaneously.