So the question is asking you to identify, approach, and analyze until you come up with an answer.
"Can" = Is it possible
"some or all" = At least a fairly small but appreciable number
"our media routines" = You Define
"be regarded" = be thought of as
"media rituals" = You Define
Is it possible for at least a fairly small but appreciable number of X to be thought of as XX?
To that I would answer yes, without question. Why would I be answering the question otherwise? You're not given esoteric standards to hold your answer with, so go ahead and answer yes without hesitation. Of course it is possible for a relatively few of one thing to be regarded (by someone unspecified) as a more specific thing.
Look up the particular words if need be, examine what makes them different, and ask yourself how they could overlap with each other. When do a series of actions take on qualities that make them more than just routine but ritualistic? Explain how some media routines are correctly described media rituals according to the qualities.
This sounds like it is based on something someone said. Who coined the term "media ritual?"
Oh... I googled it and found that lots of people are writing about this concept. Read some of what other people wrote johnpostill.co.uk/reviews/postill_CouldryReview.pdf
Then, form your opinion and make an argument!