Xiaoming's family traveled from Nanjing to Guangdong during the "Eleventh" period. Answer the question 15 ~ 17. In Guangzhou Zoo in Guangzhou, it is necessary to determine the tour route of the zoo.

In the huge map family, there are natural maps and socio-economic maps. Natural maps include topographic maps, climate maps, hydrological maps, vegetation maps, etc. Social and economic maps include industrial maps, agricultural maps, commercial maps, traffic maps and population distribution maps. To determine the tour route of the zoo, we should choose the guide map of Guangzhou Zoo.

Therefore, choose: d.