Exam 1z0-809 topic 1 question 4 discussion

Given:
class Bird {
public void fly () { System.out.print("Can fly"); }
}
class Penguin extends Bird {
public void fly () { System.out.print("Cannot fly"); }
}
and the code fragment:
class Birdie {
public static void main (String [ ] args) {

fly( ( ) -> new Bird ( ));
fly (Penguin : : new);
}
/* line n1 */
}
line n1, enables the Birdie class to compile?
Which code fragment, when inserted at