Answer : El pan está en la sección de la repostería.
(Translation: The bread is in the bakery section)
Let me explain why:
It wouldn't be in la carnicería because la carnicería is a place where meat is cooked, cut, etc. You wouldn't normally find bread there.
It also wouldn't be in los productos láteos y agrícolas because that consists of milk and dairy.
Finally, it wouldn't be in la farmacia save because it consists of medicine.