Concept:Tourism grows when natural attractions are well promoted to potential visitors.Explanation:Adequate publicity about natural scenery makes people aware of beautiful places.This awareness attracts tourists who want to explore and enjoy nature.More publicity directly leads to higher tourist arrivals and revenue.Variation in transportation affects access but is not a direct boost to tourism itself.Higher dependency ratio and labour specialisation are not related to attracting tourists.Answer:A. Adequate publicity about natural scenery