What is the correct CLEM expression to identify a handset named asdf?

The correct CLEM expression to identify a handset named 'asdf' is represented as handset = "asdf". In CLEM (Categorical Language for Events and Models), strings must be enclosed in double quotes to be recognized correctly as string literals. When you want to compare a field to a specific string value, using quotes is essential to indicate that ‘asdf’ is a string and not a variable or identifier.

The other options do not meet this requirement. For instance, if you use a single equals sign without double quotes, the engine may misinterpret the string. Parentheses or the arrow notation are also not valid for direct string comparisons. Therefore, the correct syntax using quotes ensures that the interpreter correctly recognizes and processes the string value, making it the right choice for identifying a specific handset.