Regarding the precedence of operators and conditions in Oracle Database 12c:
Option B: NOT has a higher order of precedence than AND and OR in a condition.
In logical operations, NOT is evaluated first, followed by AND and then OR.
Option E: || has a higher order of precedence than +(addition).
The string concatenation operator || has a higher precedence than the arithmetic + operator.
Options A, C, and D are incorrect because:
Option A: Multiplication (*) has a higher precedence than addition (+).
Option C: AND has a higher precedence than OR.
Option D: Conditions (which may contain operators) are evaluated according to the rules of operator precedence.