Final answer:
Oscar is likely receiving mindfulness-based therapy, which utilizes meditation and mindfulness to help patients become more aware of their thoughts in a non-judgmental way.
Step-by-step explanation:
Oscar's therapy with Annalise, where he is encouraged to notice his unpleasant thoughts and feelings without avoiding them and to recognize that these are momentary thoughts rather than deeply held beliefs, coupled with the recommendation for daily meditation to reduce stress, is likely an example of mindfulness-based therapy. This therapeutic approach incorporates elements of meditation and mindfulness to help individuals become more aware of their thoughts and feelings in the present moment without judgment. It differs from cognitive-behavioral therapy, which is more focused on changing negative thought patterns and behaviors, and from client-centered therapy, which is centered around the therapist's unconditional positive regard, genuineness, and empathy towards the client.