Step-by-step explanation:
Step 1: First define each of the terms
Charting → to make a map of (an area)
Outlining → to give a summary of (something)
Recording → to set down in writing or some other permanent form for later reference
Mapping → an operation that associates each element of a given set (the domain) with one or more elements of a second set (the range)
I think that the answer is either outlining or recording. Both of them make sense but the one that makes the most sense is recording.
Answer: Option C, recording