Step 1: Use the role of GABA.
GABA works as a brake on the nervous system. A weak brake leads to overactivity, which a person feels as nervousness and worry.
Step 2: Link the effect with a disorder.
Nervousness and constant worry are the core of anxiety disorders.
Step 3: Support with drugs.
Drugs used for anxiety, such as benzodiazepines, increase the action of GABA. This shows that low GABA goes with anxiety.
Step 4: Compare with other options.
Depression is tied to serotonin and noradrenaline. Paralysis and physical impairment are linked to damage in nerves or muscles, not to GABA.
Step 5: Conclude.
Option (3) is the best match.
Step 6: Quick recap of the reasoning.
We first understood what the question asks, then matched the key fact from the chapter with each option one by one, and finally dropped the options that belong to a different idea. This habit of linking every option to its own concept helps avoid careless slips in similar questions.
Final Answer:
Low GABA activity is tied with anxiety disorders, option (3).