I believe the antecedent is the baker. The person that is the main subject.
Best of luck,

c) When I travelled to Lagos, I bought a bicycle
He could be telling it from any view. Such as his own, from other's point of view, or as an omniscient narrator.
I believe the answer is C: brochure. I say this because they can hand out brochures at the job fair.
Be candid, straightforward, and to the point. Was it a happy ending, or a sad ending?
Be sure to stick with the tone, and feeling of the entire narrative.