11. The ____ class contains methods and properties for manipulating the date and time.

a.Zoneb.Calendar

c.Dated.Time

12. The ____ class contains methods for manipulating numbers and properties that contain static values representing some of the numeric limitations in the JavaScript language.

a.Integerb.Number

c.Mathd.Limits

13. The ____ class contains methods and properties for performing mathematical calculations in your programs.

a.Numberb.Integer

c.Functiond.Math

14. A(n) ____ function is a function that is used as the basis for a custom object.

a.constructorb.object

c.instanced.class

15. To execute the same statement or command block for all the properties within a custom object, you can use the ____ statement.

a.for/eachb.while/in

c.for/ind.loop/in

16. A(n) ____ array is an array whose elements are referred to with an alphanumeric key instead of an index number.

a.parallelb.class

c.associatived.bidimensional

17. To delete a specific property in a custom object, you use the ____ operator.

a.removeb.cancel

c.erased.delete

18. You can create a function that will be used as an object method by referring to any object properties it contains with the ____ reference.

a.selfb.this

c.superd.object

19. The ____ property is a built-in property that specifies the constructor from which an object was instantiated.

a.experimentb.try

c.prototyped.test

20. When working with a date, JavaScript stores the month as a ____.

a.value from 0-11b.value from 1-12

c.two-letter abbreviationd.?three-letter abbreviation