What is the right course of action?

In this situation, you have a "yield" (give way) sign, which means you must allow other vehicles that have the right of way to proceed before you do.

The blue truck on your left is coming from a street without a yield sign, so it has priority to pass straight through the intersection.

The tractor on your right is signaling a turn, and since it is on the main road, it also has the right of way before you proceed.

You must wait for both the blue truck to pass straight through and the tractor to complete its turn before you go.

Option 3 is incorrect because you have the yield sign, so the blue truck does not have to allow you to pass.

Remember, when entering an intersection with a yield sign, always give way to vehicles on the main road or those without a yield or stop sign. This prevents accidents and ensures smooth traffic flow.