Final answer:
The 15th periodic plan in Nepal focused on investing in infrastructure and services for tourism. It set specific goals and used posters and slogans for publicity.
Step-by-step explanation:
The 15th periodic plan in Nepal had several salient features:
- Investment in infrastructure and services: Due to the demands of tourism, the plan focused on investing in infrastructure and services to support the industry.
- Goal-oriented: The plan set specific goals and projections for areas such as aviation, electrification, and construction.
- Publicity and slogans: The plan used posters, charts, and graphs to publicize its goals and successes. Catchy slogans like 'Five into four' were used to encourage the population to achieve the targets of the five-year plan in only four years.