Which of the following factors is a major boost to tourism? Adequate publicity about natural scenery. Promoting a destination's natural beauty can significa...

Adequate publicity about natural scenery is a major boost to tourism. When a destination's natural beauty, landscapes, wildlife, and unique geographic features are well publicised through media, advertising campaigns, documentaries, and travel literature, it attracts tourists by raising awareness and generating interest in visiting those places.

Tourism depends heavily on information reaching potential visitors. Countries and regions that invest in promoting their natural attractions (waterfalls, beaches, mountains, national parks, wildlife reserves) tend to attract significantly more tourists than those with equal natural endowments but poor publicity.

A higher dependency ratio describes a population with many non-working-age dependants relative to the working-age population. This is an economic burden indicator, not something that promotes tourism. Variation in mode of transportation may facilitate travel logistics but is not itself a primary driver of tourism demand.