The correct answer is A .
This object uses a getter :
get fullName() {
return this.firstName + ' ' + this.lastName;
}
A getter looks like a method when it is defined, but it is accessed like a normal property.
So the correct access syntax is:
dog.fullName
That returns:
" Beau Boo "
The important distinction is:
dog.fullName
not:
dog.fullName()
Because fullName is a getter property, not a regular function property.
Option B is incorrect because calling dog.fullName() tries to call the returned string as a function. Since " Beau Boo " is not a function, that would cause a TypeError.
Option C is incorrect because there is no get object inside dog.
Option D is incorrect because there is no function object inside dog, and getters are not accessed that way.
Therefore, the verified answer is A .