When evaluating a complex expression which of the following rules should be followed a - evaluate from left to right b - evaluate from right to left c- evaluate using order of operations d- evaluate in any order

c : evaluate using order of operations ( pemdas )

Option: C is the correct answer.

 C-   Evaluate using order of operations

We know that while solving a algebraic expression we must follow the rule:

                       PEMDAS

whose full form is:

  Parenthesis , Exponents,Multiplication division addition and subtraction.

This means that parenthesis is to be solved first then the preference is given to the exponent, then division and multiplication are treated at the same level and the last preferred operation is addition and subtraction.

     Hence, the correct answer is:

          Option: C