He should have a bachelor's degree because if he's in PAP ART
D to Db is a half step. Look at the keys B and C on the keyboard, there is no key in between them which means it is a half step. A whole step is two keys up (either black or white) therefore, D to Db would be a half step.
The answer to 3 is B
The answer to 2 is C; different sautéed vegetables used in different sauces
The answer to 5 is”foundation”