The legal aid M/C question was really weird. For legal aid to be granted, people must pass the 4 tests, (1) means (2) jurisdiction (3) merits (4) availability of funds. In the Dietrich v The Queen 1992 case, the High Court ruled that in SERIOUS offences a trial could be indefinitely stayed...
It was definitely D) (TCP). Ethernet is not involved with the token ring system. TCP is correct - it operates on the Communication Control and Adressing Level and ensures correct transmission of data.