A ________ tab contains tools that are related to a selected object and only displays when a related object is selected

?As some attributes do not require a value, HTML supports _________ in which no value is shown in the document.

Fill in the blank(s) with the appropriate word(s).

If the following is from the method section of a UML diagram, which of the statements below is true?

+ add(object2:Stock) : Stock a. This is a private method named add that accepts and returns objects of the Stock class. b. This is a private method named Stock that adds two objects. c. This is a public method named add that accepts and returns references to objects in the Stock class. d. This is a public method named Stock that adds two objects.