2.
Which of the following are valid JavaScript identifiers?
myVariable
_name
123code
return
Correct: A, B
Valid JavaScript identifiers can include letters (both uppercase and lowercase), digits, underscores, and dollar signs. However, they must begin with a letter, underscore, or dollar sign and cannot be a reserved word like "return". The identifiers "myVariable" and "_name" are valid, while "123code" and "return" are not.