Explanation:

- In Islamic law, the process and form of divorce (Talaq) differ between Hanafi and Shia schools.

- Hanafi law prescribes some formal requirements for divorce but is generally more lenient, often accepting even irregular pronouncements.

- Shia law (particularly Ithna Ashari) prescribes a very strict adherence to the form, including presence of witnesses and clear verbal declaration.

- Both a and b: This would mean both schools strictly prescribe a form, which is not true as only Shia law insists on stricter forms.

- Neither a nor b: This would mean neither school prescribes strict adherence, which is inaccurate since Shia law does.

Correct Answer: Option 2, Shia law.