Solution
Option 1 -> work -> The passage states that work puts the brain in a 'default work' state with beta and gamma waves, which raises cortisol levels and increases stress, not a calming flow state.
Option 2 -> hobbies -> The passage explicitly mentions "Doing a hobby you enjoy puts your brain into a 'flow' state, characterized by alpha and theta waves, which cause you to feel relaxed, less stressed and less anxious."
Option 3 -> creativity -> Creativity is described as a characteristic or outcome of the flow state, not the activity one pursues to achieve it.
Option 4 -> stress -> Stress causes physiological changes in the brain and increases the risk of various diseases; it is the opposite of what creates a calming flow state.
Hence, Option 2: hobbies -> The passage clearly states that engaging in hobbies you enjoy puts your brain into a flow state characterized by alpha and theta waves, creating feelings of deep relaxation and reducing stress and anxiety. Hobbies are described as "a powerful antidote to stress" that generate the calming effect needed for the flow state -> correct