Downloaded Data: options selected and data viewing

Hi,

I have two questions which may be daft but I am unable to find an answer in the forum or help pages/documentation.

1. Is there a way to set up a survey in such way that saves the options selected rather than (only) their numerical values? For instance, for an age group question I would like to see 18-25 (if this was selected) in the data, not just 1.
2. There are types of questions for which I am not sure I can see the purpose of extra headers. For instance, for a drop down type of Q such as the food question below what is the purpose of food:2 and food:3 when a P can choose only one answer? And indeed, these header are blank after all.

fluids:1 fluids:2 fluids:3 age_group:1 food:1 food:2 food:3

      1       0       1  3     3



Many thanks in advance for any pointers/advice.

Best wishes,
Yiannis