Which of the following can not be polarised ?

Which of the following cannot be polarised ?

Which of the following cannot be polarised?

Which of the following cannot be polarised?

Which of the following cannot be polarised?

Which of the following cannot be polarised?

Which of the following can not be explained on the basis of polarisation :-

Which of following can not be polarised

Which of the following waves can be polarised?

Which of the following waves can be polarised heat waves sound waves? Give reason to support your answer.