Answer:
a. The nation has a large number of children, whose families must provide for them.
Explanation:
A high dependency ratio means those of working age, and the overall economy, face a greater burden in supporting the aging population. The youth dependency ratio includes those only under 15, and the elderly dependency ratio focuses on those over 64.
You forgot the options, but I can give you some examples, maybe this will help:
A distribution map will show you where and how much of a certain thing is happening. for example:
the percentage of literate or illiterate people in the different places
some characteristics, for example the average age, or average income for people in a certain area - here you would give a different colour for the different age or income groups.
The Everglades located in Florida is an example of a freshwater wetland
