Wait so is it:

5. Four years later, Rudolf achieved her greatest personal triumph, three gold medals in a single Olympics.
*ANSWER* AP=three gold medals in a single Olympics WM=triumph

Yes! Right! :-)

Thank you for all your help Ms. Sue. :)

You're very welcome, Anne.

Yes, that is the correct answer to the given sentence. "AP" stands for "achievement/personal triumph" and "WM" stands for "three gold medals in a single Olympics."