The correct answer is: A. explicit
Explicit typing is a programming language feature that requires the programmer to declare the data type of each variable before it is used. This helps to prevent errors and makes the code more readable.
Implicit typing is a programming language feature that allows the compiler to infer the data type of a variable based on its value. This can be convenient, but it can also lead to errors if the compiler makes the wrong assumption.
Dim is a keyword in Visual Basic that is used to declare variables. It can be used with both explicit and implicit typing.
None of the other options are correct.