Select the correct answerWhich of the following is an invalid variable?Options1code_tantra_codecode_tantra_1

To determine which of the provided options is an invalid variable, we need to consider the rules that define valid variable names in programming languages, particularly focusing on aspects like naming conventions and restrictions.

1. Variable Naming Rules:

   • A variable name must begin with a letter (uppercase or lowercase) or an underscore (_).
   • It can contain letters, digits (0-9), and underscores.
   • It cannot contain spaces or special characters (like $, %, etc.).
   • Some programming languages have specific keywords that cannot be used as variable names.

2. Analysis of Options:

   • 1: code_tantra - Valid, starts with a letter and contains underscores.
   • 2: code - Valid, starts with a letter.
   • 3: tantra_1 - Valid, starts with a letter and ends with a digit.

Based on standard conventions for variable names, all the options listed appear to be valid. However, without additional context about the specific programming language's rules, it's difficult to definitively state which one might be invalid.

Summary

By following variable naming conventions in most programming languages, it seems that all provided options code_tantra, code, and tantra_1 are valid variable names. Hence, none of the options appear to be invalid. If there is a specific programming language context that invalidates one of these, please provide that information for further analysis.