$9.$ Son lenguajes de programaci$$n orientados a objetos: a$)$ Basic, C$,$ C#$,$ C$++,$ J#$,$ Java, Pascal, Lisp, Simula. b$)$ C#$,$ C$++,$ Eiffel, Vala, Lisp, Pascal, Smalltalk, Visual Basic $6\mathrm{.}0.$ c$)$ Ada $95,$ C#$,$ C$++,$ Pascal, Java, PHP $4\mathrm{.}0,$ Python, Simula, Smalltalk. d$)$ Ada $95,$ C#$,$ C$++,$ Eiffel, Vala, Python, Simula, Smalltalk, Visual Basic $6\mathrm{.}0.$