Final answer:
Option d, '200917024', represents the correct numbering scheme for identification of IRS written determinations.
Step-by-step explanation:
The correct numbering scheme for identification of IRS written determinations is represented by option d. In this scheme, the year is represented by the first four digits ('2009'), the week of the year is represented by the next two digits ('17'), and the ruling/memoranda number for that week is represented by the last three digits ('024'). The other options do not follow the correct numbering scheme as specified by the rules provided.