Final answer:
The group with the lowest operator precedence among the given options is logical OR. Operator precedence dictates the order in which parts of an expression are evaluated, and logical OR is typically evaluated after equality, relational, and addition operators in most programming contexts.
Step-by-step explanation:
The group that has the lowest operator precedence among the options given is c. logical OR. In most programming languages, operators have a defined order of precedence which determines how expressions are evaluated. The order is as follows, from highest to lowest precedence: equality operators like == and !=, relational operators such as <, >, <=, and >=, addition operators like + and -, and lastly, logical OR represented by ||. As a general rule, logical operators like AND and OR have some of the lowest precedence, which means they are evaluated after most other operations in an expression.