Refer to the exhibit. The trunk between SW2 and SW3 is not operational. Which action enables traffic for VLAN 200 to pass?

The command `no switch mode trunk` is syntactically incorrect and does not serve to enable trunking.

While `switchport nonegotiate` prevents DTP, it requires the interface to be explicitly configured as `switchport mode trunk` to form a trunk, and if the other side is in a dynamic state that doesn't resolve to a trunk, it won't work. It's not the most flexible solution.

Configuring `switchport mode dynamic desirable` on both SW2 and SW3 interfaces actively attempts to form a trunk link; if both ends are desirable, or one is desirable and the other is `dynamic auto` or `trunk`, a trunk will successfully form and become operational, allowing VLAN 200 traffic to pass.

`vtp mode transparent` affects how VLAN information is managed across the trunk, but it does not directly influence whether the physical trunk link itself forms or becomes operational.