$\mathrm{A}(\mathrm{n}) ______________ constructor is one that requires no arguments.

Answer: A no-argument constructor, also known as a default constructor, is a special method in object-oriented programming that initializes an object's properties with default values when creating the object. It doesn't require any arguments to be passed during the creation of the object. For example, in the following Java code, we create a no-argument constructor for the "Student" class: ```java public class Student { String name; int grade; // No-argument constructor public Student() { this.name = "Unknown"; this.grade = 0; } } ``` When creating an instance of the Student class using this constructor, the object's "name" will be initialized to "Unknown" and "grade" as 0. To create a new Student object, we can call the no-argument constructor like this: ```java Student student = new Student(); // No arguments required ```