Samir hated navigating rush hour traffic. He asked his manager if he could arrive and leave $15$ minutes earlier to avoid traffic, and his manager agreed. Later, Samir asked if he could begin arriving an hour later and his manager agreed once more. Which of the following techniques did Samir use?

Nudging

Door$-$in$-$the$-$face technique

Foot$-$in$-$the$-$door technique

Low$-$ball technique