If an exception is thrown and no catch block matches the type of the thrown parameter, then _____

The correct answer is: A. the program terminates.

If an exception is thrown and no catch block matches the type of the thrown parameter, the program will terminate. This is because the exception is not handled and the program cannot continue.

Option B is incorrect because the first catch block will not be executed if no catch block matches the type of the thrown parameter.

Option C is incorrect because the last catch block will not be executed if no catch block matches the type of the thrown parameter.

Option D is incorrect because the program will not proceed with the code following the catch blocks if an exception is thrown and no catch block matches the type of the thrown parameter.