Select the correct answerWhich of the following is invalid?Options_c = 1__cod__ = 1none of the mentioned__c = 1

To determine which of the given options is invalid in programming, particularly in languages like Python:

1. Understanding Variable Assignment: In most programming languages, variables are assigned values using an equal sign (=). Variable names must adhere to specific rules, such as starting with a letter or underscore and cannot contain spaces or special characters.

2. Analyzing Each Option:

   • Option 1: c = 1
     This is a valid variable assignment. It assigns the value of 1 to the variable c.
   • Option 2: __cod__ = 1
     This is also valid. Variable names can include underscores, and __cod__ follows the naming conventions.
   • Option 3: none of the mentioned
     This option doesn't look like a variable assignment and may be a placeholder indicating that none of the previous options are invalid. Since this isn't an assignment, it can be viewed as ambiguous but not inherently invalid.
   • Option 4: c = 1
     This is identical to Option 1, thus also valid.

3. Identifying the Invalid Option: The only option that doesn't represent a valid variable assignment is "none of the mentioned."

Final Answer

The invalid option is: "none of the mentioned."