What are the W2 Box-14 Categories to be selected if Box14 description has TUITION (less than $1000) and RSU for someone based in California?

Box 14 Entries are not often used in calculations on your tax return.  Box 14 is kind of a 'catch all' where employers can make notes that may be useful to the Employee.  You don't have to enter these amounts in TurboTax. 

An employer may gift education assistance up to 5,250 with it being tax free to the student. That's why it's in Box 14, it should have no affect on the student's tax return. 

Click this link for more info on Employer Tuition Assistance.

The RSU entry Box 14 in this case should be reporting the compensation created by the vesting of the RSU, not the taxes withheld, and this amount was added to your Box 1, Wages amount. 

Click this link for more more info on RSU in Box 14.